That will come in next-gen adblockers. Ads will run in an emulated sandbox, unseen by the user. And many user-agent tools already allow randomization, a tiny fictional history.
Sure, but they'll be banned by Apple / Android ToSes. But meh, that shouldn't stop everybody. And it would be fun to watch the back and forth between ad tech and ad blockers.
True. Do carriers try to add stuff like this to their ToS? I usually ignore them and root my phones anyway, so I'm not current on which part of the "value chain" is offering a ToS.