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...

In this paper, we examine how the introduction of network externalities impact an open and vertically integrated platform’s post-merger contractual relationship with third-party sellers distributing through its marketplace. Regardless of whether the platform uses linear contracts or two-part...

In this paper, we examine how the introduction of network externalities impact an open and vertically integrated platform’s post-merger contractual relationship with third-party sellers distributing through its marketplace. Regardless of whether the platform uses linear contracts or two-part...

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...