Much has been written about most favoured nation clauses or agreements in the context of online platforms (also known as retail MFNs), and the challenges faced by competition authorities in assessing the potential anti-competitive nature of such agreements. The perceived absence of a clear legal...

Platforms often use fee discrimination within their marketplace (e.g., Amazon, eBay, and Uber specify a variety of merchant fees). To better understand the impact of marketplace fee discrimination, we develop a model that allows us to determine equilibrium fee and category decisions that depend...