This paper analyzes the competitive interplay of prices amongst retail channels: offline (brick-and-mortar) and online (such as retailers’ websites and online marketplaces). We find evidence of a close competitive relationship between the two channels, in which prices correspond tightly across...

There are a variety of legitimate reasons why competitors may need or simply wish to collaborate. Firms may collaborate in order to finance innovation and improve the quality or variety of their existing products, to develop new and superior products, to expand to new markets, or to improve...

In this paper we apply a general model of one-sided platform businesses to a duopoly competitive framework. We have a particular interest in how the option of multi-homing affects the competitive dynamic. We find that if multi-homing is precluded, the incumbent platform is always able to...

One cannot be a fully conversant antitrust practitioner or academic in today’s antitrust environment without a basic, if not sophisticated, understanding of markets involving multisided platforms or so-called ecosystems—multiple horizontal and vertical relationships that center around...