Sam Peltzman

If One Monopoly Is Good for the Firm, Are Two Always Better? Aaron Director and the Tie-in Problem

When IBM patented a punch card processing machine, it had the power to influence both the market of machines and punch cards, but this is...

Standard Oil and Antitrust: the Effects of Aaron Director's Socratic Method

Aaron Director, who died 15 years ago, made important contributions to the analysis of business practices. None were ever published under his name. Professor...

George Stigler on Regulation: Lessons for Today

October 20 marks the 35th anniversary of George Stigler’s Nobel prize, the first of Booth School of Business’s grand total of eight Nobels. To...

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“An Offer We Can’t Refuse”: How We Gave Away Our Data and Made Big Tech What It Is Today

WhatsApp’s new terms of service should come as no surprise. For years, Big Tech has been offering its users these “take it...

Paul Romer: “If You Think Moderation is Censorship, You’ve Got a Competition Problem”

During a Stigler Center keynote webinar, Nobel laureate Paul Romer discussed concentration problems in the US and possible solutions, including a “pigouvian”...

The “Next Frontier of Propaganda”: Micro-Influencers are Paid to Spread Political Messages, Disinformation

Online influencers aren’t in the business of promoting just products anymore. New research finds that micro-influencers are increasingly used to spread political...

Digital Markets Act: Policy Choices and Conditions for Success

Last month, the European Commission introduced an ambitious new set of rules for digital platforms, the Digital Markets Act. Here is what...

The Silent Coup

President Donald Trump's seditious actions are exposing the political power that Twitter, Amazon, Google, Apple, and Facebook enjoy. Banning him from their...

How Will the Digital Markets Act Regulate Big Tech?

While the recently introduced Digital Markets Act rules might change prior to final approval, there is a lot to consider already. What...

Covid-19 Aggravates Existing Income, Gender, and Race Inequalities, and Further Increases Political Divisions

Seventy percent of Americans know someone who tested positive; one in five know someone who died from coronavirus, survey shows.