Ohio v. American Express: Implications for Non-Transaction Multisided Platforms

By Joshua D. Wright & John M. Yun – 

The Supreme Court’s decision in Ohio v. American Express settled a number of critical issues concerning multisided platforms — including whether each side of a platform constitutes a separate relevant product market. The ruling also addressed whether a prima facie assessment of competitive harm must incorporate the impact to consumers on all sides of a platform. The Court, however, potentially narrowed the scope of its ruling by making an e