Auctions

Case: Hild, M., Dwidevy, A., and Raj, A., 2004, “The Biggest Auction Ever: 3G Licensing in Western Europe”, Darden Business Publishing

Discussion question: What are the alternatives to auctions?

Textbook Reading: Chapter 3 (Intro and Section 3.3; pp. 65-67 and pp.83-89) and Chapter 12 (Section 12.4; pp. 434-437

In this lecture video Tim Roughgarden “provides a detailed case study of the 2016-2017 Federal Communications Commission incentive auction for repurposing wireless spectrum”. It demonstrates how economics, computer science and business can coincide to solve complete real world problems.

In October 2020 Paul Milgrom and Robert Wilson were awarded a Nobel prize for their work on auction theory and design. Tim Harford provided a neat overview of their contribution in the Financial Times. As he says,

A well-designed auction forces bidders to reveal the truth about their own estimate of the prize’s value. At the same time, the auction shares that information with the other bidders. And it sets the price accordingly. It is quite a trick.

Instructor resource: The Biggest Auction Ever: What Happened Next?, February 2019

To see my guided tour of the Dutch flower auction in Aalsmeer, see here:

You can test you knowledge with this quiz.

Learning Objectives: To consider how auctions compare to other allocation mechanisms. To understand different types of auction and apply them to real examples.

Cutting edge theory: Auctions are used in e-commerce

Focus on diversity: An expert on applied auction formats, Susan Athey was the first female winner of the John Bates Clark medal. She has been an advisor to Microsoft and you can follow her on Twitter here

Spotlight on sustainability: How governments can use beauty contests to mitigate the environmental impact of infrastructure spending

Oligopoly

Group activity: Cournot and Bertrand Games, December 2018

The activity is based on Beckman, S. R., 2003, “Cournot and Bertrand games” Journal of Economic Education, Vol.34, No.1, pp.27-35

Textbook Reading: Chapter 5 (Section 5.2; pp. 139-145)

Here is a good example of (potential) tacit collusion

In this Lex Fridman interview with FBI hostage negotiator Chris Voss, Voss calls the word “fair” the f bomb. In his experience,

Nobody uses the word fair when they have got criteria to back them up

Here’s Bart Wilson on the meaning of the word “fair”:

Learning Objectives: Gain experience of iterated prisoner’s dilemmas

Markets in everything

Reading: I’ve got debts, please buy my kidneys” The Times September 27th 2009

Discussion question: What are some different ways in which we could allocate kidneys?

In April 2021 a New Jersey man sued the federal government for the right to sell his own kidneys:

“If the opportunity existed so that I could help out someone in need while helping myself, I might do it,” Bellocchio said.

Bellocchio argues that kidney transplants are low-risk procedures, and notes that you can donate an organ — even though you can’t sell one.

“Altruistic donors are lauded for their selflessness. Their vital role in saving lives is undeniable,” the court papers say.

“However, demand outstrips supply, and there is no valid constitutional or public policy rationale why one should not be able to receive a profit from such a transaction.”

Further reading: Postrel, V., “Here’s Looking at You, Kidney” Texas Monthly, June 2006

The issue of repugnance rests on the claim that the moral status of an activity shouldn’t hinge on whether money changes hands. If something is morally permissible to exchange for free, then people should be allowed to trade. Another way of thinking about this is that the reason slavery was wrong was because of the slavery, not the profits. If someone “donated” a slave, that wouldn’t be ok.

Common rejoinders to markets include things like:

  • Financial compensation commodities the good/service and thus changes our relationship with it. As Peter Jaworski explains in the podcast linked below, we buy and sell dogs and that doesn’t mean we treat them as mere objects.

Consider the case of sulphur dioxide emissions (via McMillan, J., (2002) Reinventing the Bazaar, W.W. Norton & Co. (p.182-187) link), and notice how for many environmental activists the moral objections to trading rights to pollute seemingly outweighed the dramatic progress on reducing harmful pollution. This implies that switching people’s mindset to tolerate market mechanisms could be an incredibly powerful tool to improve the world around us.

The Story of Vaccine CA is a really good example of an urgent allocation problem that cannot be solved by markets or by central planning. It’s an ethnographic and anecdotal account of a 200 day period where tech volunteers got together to alert American’s on where covid shots were available.

Listen:

  • Ep. 2, Peter Jaworski – Should Markets Have Limits? The Curious Task, August 14th 2019 – in this interview Peter Jaworski argues that If it’s morally permissible to donate blood plasma it should be ok to be paid for it. In fact, if we pay companies for plasma bought from Americans, why not pay Canadians? And if every other person involved (doctors, nurses, equipment suppliers, logistics) is being paid, why shouldn’t the person making the donation?
Learning Objectives: Understand the scope and ethical boundaries of markets

Focus on diversity: Virginia Postrel’s decision to donate a kidney, and write about it, provides a personal and inspirational view of the topic.

Platforms

Case: Moon, Y., “Uber: Changing The Way The World Moves” Harvard Business School Case No. 316-101, January 2017

Case preparation: Uber, June 2022

Textbook Reading: Chapter 5 (Section 5.3; pp. 145-149)

  • The world’s largest retailer, Alibaba, has no stock
  • The world’s largest taxi company, Uber, owns no cars
  • AirBnB own no hotels
  • Facebook produce little media content

Platforms are dominating an increasing area of the digital landscape and generate revenue through:

  • Subscription fees
  • Commissions
  • The monetization of attention

This case study looks at the effect of Ariana Grande’s sell out concert at Madison Square Garden in 2015. The chart below is fascinating. The red line is a reflection of demand, showing how many people are opening the app (presumably because they are hoping to get a ride). The peak at the end of the concert is obvious and increases by a factor of 4. Ordinarily, one might expect massive increases in wait times and a shortage of drivers. However Uber’s surge pricing algorithm increased the fare which enticed more drivers to be available. This is the green line.

 

The consequence of the increase in supply, to deal with the heightened demand, was an extra minute of wait time but no drop off in the number of completed rides. How amazing!

You can read the full article here:

In 2023 I published an academic article on how cultural economics helps us to categorise and understand new entrants such as Uber. I find that reducing entry barriers and less exclusion are key factors in a dynamic market order. Here is Elizabeth Warren emphasising the distinction between employees and contractors (note: I think she’s wrong):

In this Vanity Fair article, Uber co-founder Travis Kalanick defends surge pricing:

“You want supply to always be full, and you use price to basically either bring more supply on or get more supply off, or get more demand in the system or get some demand out,” he lectures like a professor. “It’s classic Econ 101.”

Don’t forget – waiting in line is just another form of surge pricing:

Another upside of ride sharing apps is a reduction in drink driving. According to one study,

Our results imply that ridesharing has decreased U.S. traffic fatalities by 5.2% in areas where it operates. The annual life-saving benefits are $6.8 billion.

An excellent article on the incentives of platform industries is “The Host’s Dilemma” by Jonathan Barnett. He argues that platform providers face a trade off between being open (and generating users) and regulating access (to monetise).

Recommended reading:

Learning Objectives: Peer-to-peer markets, Ethical implications of disruptive business models

Cutting edge theory: An economic analysis of platforms

Spotlight on sustainability: Employee welfare

CC Simulation

Case:

  • CC Simulation, February 2014
  • Discussion question: Is the market for airport services in the UK competitive?

Textbook Reading: Chapter 5 (Section 5.4; pp. 149-159)

Group activity: CC Simulation B, May 2018

You can watch a good introduction to Porter’s 5 forces here. An explanation from Michael Porter himself is here:

And no lecture on the 5 Forces model would be complete without watching Florian Ederer’s take:

Case solution: CC Simulation: The Verdict, October 2014
Group activity: Tollbooth, December 2020
Learning Objectives: Understand how regulators view competition. Create a market entry strategy.

Spotlight on sustainability: Look at the European market for aviation travel and emissions

Competition and the Market Process

Lecture handout: Competition and the market process*

Textbook Reading: Chapter 5 (pp. 135-164)

Half of all U.S. publicly traded companies have disappeared within ten years of entering the market (West, 2017, p.12)

The point of this session is to critically examine the economic theory of competition, by contrasting “competition as a market structure”, with “competition as a behavioural activity”. This turns the debate away from market concentration, towards the issue of contestability and sustained competitive advantage. We also see that competition is the driving force of the market process, and how this relates to regulation. Indeed a cynical view is that anti-trust is simply the strategic use of government powers by incumbent firms to restrict competition.

The lecture mentioned the tricky case of patents, which are one of three areas of intellectual property:

  • Patents protect inventions
  • Copyrights cover creative works
  • Trademarks cover brand names

A timely example of anti-trust is the tech industry. See this article by Russell Brandom explaining the case against Amazon, Apple, Facebook and Google. By contrast, Megan McArdle says ‘Yes, Google has a monopoly: who cares?‘ I recommend Ben Evans’ discussion of tech giants and definitions of market share, and this tl:dr primer on why mergers and acquisitions are so important for the tech industry by the International Centre for Law and Economics.

I highly recommend Benedict Evans’ newsletter (no relation), particularly these articles:

Prior to becoming Chair of the Federal Trade Commission, Lina Khan, wrote a 2017 article ‘Amazon’s Anti-Trust Paradox‘ that pointed out that the traditional concern of competition authorities – that monopolists would use their market power to raise prices – is inappropriate when considering modern technology platforms. However, her stringent views on regulatory issues seem to neglect the concept of creative destruction. There’s a long list of examples of companies that appeared to be in a dominant position, undermined by the perennial force of competition.

Here’s a great thread on the same issue: https://twitter.com/BrianCAlbrecht/status/1640744685701406721?s=20

In 2023 Lina Khan was interviewed by Planet Money, and I found it interesting how she pursued her biggest cases primarily on the grounds of potential outcomes, and then defended them by claiming that they signalled that the authorities were going to be increasingly litigious and active. This antagonistic attitude struck me as being quite far from the original role of competition authorities, which is to ensure an even playing field and to prioritise consumers.

Compare that to the defense industry, with this great graphic showing consolidation over from 1980-2001:

 

Sometimes I think that I’m using a straw man argument to suggest that an arbitrary 25% market share is used by serious people to determine policy. And then I see Rana Foroohar write this in the Financial Times (May 8th 2023):

Bertrand competition shows how the act of competition can take place even with just two companies. In fact, the concept of competition doesn’t rely on the number of competitors at all. For example this advert reveals how Usain Bolt’s lack of “competition” doesn’t prevent him improving himself.

This is a good explanation of the side by side market/firm diagram, and the process by which perfectly competitive firms make zero profit in equilibrium.

Some good examples of daft occupational licensing are in this Twitter thread.

This is a nice example of the difference between complements and substitutes, and whether external economies of scale mean that more competition benefits the competitors:

Consider the following points:

    • What is the value?
    • Are targeted ads better for the consumer than uniform ones?
    • Is Facebook merely a platform? Or a media company?
    • Re network effects: Is it a natural monopoly?
    • How do you regulate zero price products? [Don’t monopoly on pricing power! Do it on barriers to entry.]
    • Barriers or costs?
    • Why do they want to be regulated? Why do you think the congressional hearings took place?
    • Who owns your metadata? Are they really your likes?
Learning Objectives: Contrast competition in a static sense, defined in terms of market concentration, with competition in a dynamic sense, defined in terms of contestability. Understand the difference between barriers and costs.

Market equilibrium

Lecture handout: Market equilibrium*
Group activity:

Textbook Reading: Chapter 3 (Intro, Section 3.1, 3.2; pp. 65-83)

This video shows how prices are formed at the London Metal Exchange:

And this video shows a behind the scenes look at “the ring”:

In March 2022 the price of Nickel jumped dramatically in early trading and the CEO of the LME decided to suspend trading and cancel previous orders. The hedge fund Elliott Associate had made almost half a billion pounds from the market turbulence and decided to sue. Read more about it here.

I use this as a follow up exercise:

Group activity: Copper at the LME, December 2022
Instructor resource: Copper at the LME Solutions, December 2022

And here is a useful activity:

Group activity: Comparative Statics Worksheet, December 2020
Instructor resource: Comparative Statics Worksheet Solutions, December 2020

Learning Objectives: Apply basic comparative statics to a range of economic events. Understand how interventions affect market activity

Focus on diversity: Legendary microeconomics instructor Walter Williams (1936-2020) wrote extensively on how government restrictions on mutually beneficial exchange can harm minority groups. He studied the impact of minimum wage legislation in apartheid South Africa and published a book called ‘The State Against Blacks‘ . Here is a video about his autobiography, ‘Up From the Projects‘. Here is video footage of a toast from 2003, which occurred when I was his student. Here is a fitting GMU economics department tribute to his career. And here is the gift he left people like me, to stop me doing things like this

Price discrimination

Activity: Read the following Twitter thread (also available here).

Activity: Complete the India Worksheet, April 2019 or complete this India Quiz
Lecture handout: India DB*

Textbook Reading: Chapter 1 (Section 1.3; pp. 30-38) and Chapter 4 (Section 4.3; pp. 112-122)

The main concepts from this session – elasticity and price discrimination – lend themselves beautifully to practical implications. A nice application is an identification of the price, income, and cross price elasticities of various products. That said, I think it’s easy to misuse these concepts. Cross price elasticity is in part captured already in price elasticity (since a chief determinant of price elasticity is the availability of substitutes) and there can be an unfortunate tendency to use income elasticity labels inappropriately. I do not believe in any inherent distinction between “necessities” and “luxuries” – as Mary Douglas said, “there will always be luxuries, for rank must be marked” 1979 [1996] p.85). Income elasticities are better assigned to social groups, rather than the goods themselves.

Activity: Elasticity Assignment (30 points!)

Here’s a nice example of price discrimination:

I use Mr Busy and Mr Savvy as examples rather than the female versions because I find the “Little Miss” designation to imply subservience. Also, there isn’t a direct equivalent for both. Although there is a Little Miss Busy (even though the picture is not as evocative of busyness as Mr Busy) there is no Little Miss Savvy. There is a Mrs Thrifty, which works well, but she only appears as a minor character (as the wife of Mr Thrifty).and doesn’t look very thrifty. There is an alternative, and obviously fake “Little Miss Thrifty” (pictured) but she doesn’t look thrifty either. Liking shopping is probably the opposite of thriftyness! That’s why I stick with the men.

The following is a great resource on price discrimination

How price discrimination relates to airlines, see:

In March 2024 Legoland announced that they would adopt a surge pricing model. They should have announced a model of “heavy discounts for off-peak times”, because that is the same thing, but surge pricing seems to be the (unpopular) term.

Also see this video on the concept of bundling:

And the concept of tying (from Alex Tabarrok):

Group activity: Wembley Stadium, July 2012
Learning Objectives: Understand different techniques for price differentiation. See the relationship between revenue and elasticity

Cutting edge theory: The case includes a discussion of PWYW pricing models

Focus on diversity: The case is set in India

Economies of scale

Case: “Dogfight over Europe: Ryanair (A)” Harvard Business School case no. 9-700-115, November 21st 2007

Discussion question: What are some sources of economies of scale? How do they apply to British Airways in 1986?


Textbook Reading: Chapter 2 (Section 2.3; pp. 54-59)

During class I also recommend:

Case: “Dogfight over Europe: Ryanair (B)” Harvard Business School case no. 700116, June 12th 2000

A 2014 newspaper report likened the rise of budget supermarkets (such as Aldi and Lidl) to the strategy that saw Ryanair outcompete BA:

Finding ways to reduce costs is super important. As Jeff Bezos said, “cost reduction means inventing a better way, and when you invent a better way you make the whole world richer.”

If you are interested in aviation, this episode of Cockpit Casual starts with a fascinating account of how airline companies (and airports) reacted to covid given the large number of leased planes and the substitutability of passenger and cargo payloads.

The pioneer of no frills airlines were Southwest. See “Why are no-frills airlines so cheap?” The Economist, October 18th 2013. This article explains some of their key decisions. Which include:

  • Only flying 737s
  • Simple fare structure
  • Point-to-point (for less congested airports)
  • No assigned seating
  • No inflight meals
  • Only one fair class

(Note that this demonstrates a lack of price discrimination. Whereas Ryanair do lots of it.)

Learning Objectives: Understanding internal and external sources of economies of scale.

Spotlight on sustainability: Use of waste products

Cost curves

Case:

  • La Marmotte, January 2012
    Instructions: Complete Exhibit A and provide suggestions for the two key decisions

  • Spreadsheet.xlsx
  • Note: parts of this case rely on finding derivatives. Here is a background note:

Lecture handout: Cost curves*

Textbook Reading: Chapter 2 (Intro, Section 2.1 and 2.2, pp. 39-54)

La Marmotte was published by Sage in 2019. La Marmotte is a fictitious restaurant but based on a real business in Montalbert. You can see whether the skiing is good right now with this webcam.

Here is a video explaining the concept of the planning horizon:

A key part of this session is grasping the power of this tweet by Sam Altman:

My favourite example of the importance of having an intuitive understanding of the shape of average costs curves is this one:

Learning Objectives: Sunk cost fallacy, short term shut down condition, profit maximisation, deriving a supply curve.

Cutting edge theory: La Marmotte was published in 2019!