The proper assessment of monopoly power or dominance in platform markets is a hot topic of debate and study, including by competition agencies around the world and the multilateral organizations in which they participate. For example, the International Competition Network is currently gathering...

This comment is submitted by the Global Antitrust Institute (GAI) at the Antonin Scalia Law School, George Mason University to the Swedish Competition Authority regarding its proposed market study of digital platforms. The GAI Competition Advocacy Program provides a wide range of recommendations...

The Discussion Paper, intended to guide the ACCC toward the recommendations in the ongoing Digital Platform Services Inquiry, suggests consideration of a wide variety of sweeping changes in Australian competition-law enforcement and the enactment of additional regulations in regard to social...

The Australian Competition & Consumer Commission (ACCC) released its Digital Platform Services Inquiry, Interim Report No. 5 (Regulatory Reform) in September 2022. In December 2022, the Australian Treasury requested comments on the report. The ACCC Report recommends, inter alia, several...

We revisit the economics of “platform envelopment strategies,” whereby a dominant platform (the enveloper) operating in a multi-sided market (the origin market) enters a second multi-sided market (the target market) by leveraging the data obtained from its shared user relationships. In...

We consider a three-level supply chain where a monopolistic seller distributes its product both directly through its own distribution channel and indirectly through platforms accessed by intermediaries competing for final consumers. In this setting, we examine the welfare effects of platform...