This article analyses the crucial role of user data for digital markets contestability and presents policy proposals devised to address growing concerns about the dominance of data-rich incumbents in digital markets. To this end, we discuss a data-driven theory of harm that would warrant ex-ante...

Auf vielen Netzeffektmärkten, so auch auf den Informations- und Kommunikationsgütermärkten, steigt der Produktnutzen zumeist mit einer zunehmenden Verbreitung des jeweiligen Produktes. Dieser Größenvorteil führt laut Netzeffekttheorie häufig zu einer Monopolisierung bzw. Standardisierung...

Fibre deployment of next-generation high-speed broadband networks is considered to be a decisive development for any information-based society, yet investment activities and especially the adoption of fibre-based broadband services take place only very gradually in most countries. This work...

The power and influence of dominant tech platforms — Google, Facebook, and Amazon, in particular — have become a central topic of debate. In this paper, I argue that these firms are best understood as the core infrastructure of our 21st century economy and public sphere. Whether it is...

Infrastructure regulation has faced transitions not just in recent years, but also throughout much its existence over the last century. Among the many crucial issues in these transitions has been how to handle network effects. These can both cause monopoly and complicate the management of...