Unease about the growing market power of digital platforms has unleashed a broad discussion on remedial policy measures. One concern is that the high level of concentration in platform markets is impeding digital innovation. A somewhat more narrowly construed assertion is that the dominance of...

This paper relates to current concerns about the high concentration of digital platform markets and the effects of large companies such as Amazon, Facebook, Google, and Microsoft, on innovation. Several stakeholders and analysts assert that digital platforms have become so dominant that they...