Law Commons^™

The American Express Opinion, Tech Platforms & The Rule Of Reason, Tim Wu

Faculty Scholarship

This paper makes two points. First, it describes the opinion as creating a mirror-image of the "per se" rulings, this time favoring defendants instead of plaintiffs. Second, however, it points out the narrowness of the decision. If the American Express opinion had created rules for all two-sided platforms it would have fundamentally changed much of antitrust law, by reaching so much of American commerce. For the concept of a two-sided platform is open-ended enough to conceivably describe businesses as diverse as malls, sports leagues, real estate agents, stock exchanges, and most tech platforms. However, the American Express opinion is narrower …