Let's play a hypothetical game. Your TV attempts to literally control your life. And is ultra HD and really cheap. But you have to keep its front facing camera uncovered or it blares an alarm saying that its front camera is covered. The alarm also activates, but more quietly, if it loses its internet connection.
Finally, there is a 30 second "sponsorship punishment" if it sees you have brought a product competing with its sponsor.
So say the sponsor is Coke and it sees a 2 liter bottle of pepsi in your home. It displays something literally equivalent to (not in exactly so many words) "we are punishing you for bringing pepsi into our home, because our sponsor is coke." It then counts down a 30 second punishment timer. As a shopper you dont have THAT strong of a preference between coke and pepsi. So the next time you need to watch a movie on the dictator (name of TV set) you buy coke that night instead of pepsi.
Does that cross a line? How would you legislate against it? Devices shall not act as slave owners over humans who have bought them?
Well, um....