In fact, ideally, the User Agent would advertise our privileges. Like a DNT option and websites would respond with a paywall or something instead and be expected (by law) to respect the DNT. Then, on first load, browsers could say, "Do you wish to allow tracking?" and warn about the added paywall cost vs. the tracking cost.
Well, I quite like that part. It pushes content providers to look for surveillance free business models, such as content based ads that aren't personalized. Why should selling your data vs. paywall be the only options? To protect Google's ad cartel?
That seems like a weird spin. Businesses are being regulated here, not individuals. I don't see how the law would control me.
It doesn't. That's merely one way how businesses could comply with the law, the other option would be to look for better business models as I said in the comment you replied to.
Okay, cool, don't opt out then. I on the other hand would prefer to see ads based on the content I'm viewing for which no other data from me needs to be passed around.