Law Commons^™

Antitrust And Two-Sided Platforms: The Failure Of American Express, John B. Kirkwood

Faculty Articles

Two-sided platforms serve two sets of customers and enable them to interact with each other. The five most valuable corporations in America – Amazon, Apple, Facebook, Google, and Microsoft – all operate two-sided platforms. But despite their growing power, the Supreme Court's American Express decision has made it harder to stop them from stifling competition. This Article systematically exposes the flaws in the Court's reasoning and identifies the principles that should govern future cases. The Court’s most fundamental error was to require plaintiffs in rule of reason cases to make an initial showing of consumer harm that weighs the effects …