Generally, it might seem that the problem of a few system leaders hoarding data should be addressed by competition law. Market power and monopolizations generally trigger competition-law remedies. However, as will be discussed below, when it comes to accessing data, and especially when access to data should be granted as a continuing service, competition law is generally the wrong platform to use. Access or forced collaboration is difficult to establish under competition law. The case law of the Court of Justice of the European Union (CJEU) makes it difficult to succeed in arguing that a refusal to grant access to data is an abuse of market dominance under Article 102 TFEU. Proving market dominance in data-related markets is a challenging undertaking and is highly case specific. Similarly, the very stringent requirements defining abuse were developed for different situations and may need to be adapted to circumstances of the data-driven economy. More importantly, only undertakings would be able to rely on a right to access data under Article 102 TFEU, which would generally exclude access claims of consumers. Finally, the enforcement system of competition law does not seem to be sufficiently effective to guarantee competitive markets for the mass phenomenon of data lock-ins caused by connected devices.1