Regardless of their current brand, Apple is the next big advertising giant and no amount of brand purity is going to change this. The data of Apple's users is simply of too high value for Apple to ignore forever.
Makes me think of that first decade (98-08) when Google actually wasn't being evil. Yeah, it's inevitable that Apple will turn to this when they can't grow any more simply by raising the prices of their devices. Perhaps they have reached that point about now with iPhone 14.