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...

Net neutrality - all bits should be treated identically by broadband Internet service providers regardless of source - is hotly debated. Proponents find adequate competition among broadband providers to prevent harm from content-based discrimination. Opponents find such regulation premature or...