This article demonstrates the inner relationship between gatekeepers and their complementors and the impact of information sharing on the overall market competition intensity and the economic surplus allocation. Several competition law-based cases are grounded on the incompleteness and...

Firms operating in two-sided markets have to integrate in their optimal pricing structure the existence of indirect externalities across groups of consumers. Beyond direct externalities (network effects), such markets are characterized by the increasing value of the platform for the users on one...