This short paper, which takes the form of observations submitted to the European Commission in the context of its decision to host a conference in Brussels in January 2019 on “Shaping competition policy in the era of digitisation”, seeks to make the following points. First, while caution must be taken when analysing digital platform markets, there is no reason to believe that the Commission cannot properly assess such markets and that the risk of type-II errors should necessarily prevent intervention. To the contrary, type-I (under-enforcement) errors may be particularly damaging considering that these platforms not only control access to their own products and services, but also – and this is a critical observation – to third-parties’ products and services given their intermediation functions. Second, while the focus of Commission investigations in digital platform markets has thus been focused on vertical foreclosure, including efforts by digital platforms to extend their market …
