The US Department of Justice antitrust case against Google alleges an illegal monopoly in search and search advertising in their home and largest market.
The lawsuit targets Google's control of the Android mobile operating system and exclusive revenue share agreement with Apple, which the EU prohibited in 2018, a decision that Google has appealed.
Alongside antitrust enforcement, legislative initiatives in the EU and UK will create an ex ante antitrust framework for relations between “gatekeeper” platforms and their users and customers, which the US Congress has yet to emulate.