Marktuntersuchungen als neues Instrument für Wettbewerbsbehörden?

In numerous sectors, especially in the digital economy, market concentration has steadily increased in recent years and is rarely challenged by competitors. Existing competition laws have also done little to make digital markets more contestable. This article shows that market investigations can enable competition authorities to improve competitive conditions in digital markets. It assesses the use of market investigations in those jurisdictions that provide for them, explains their role in the digital economy, and discusses how market investigations might usefully be designed