Yes, that's where the saying "not your keys, not your coin" comes from. But that's another deep rabbit hole. Since this thread is about Google (don't forget),

Yes, that's where the saying "not your keys, not your coin" comes from. But that's another deep rabbit hole. Since this thread is about Google (don't forget), what's the equivalent of "not your keys" for Google ads? That's why it's an apt comparison, and the subject of the EU's complaint.