I have to wonder if that's part of the paperwork at a dealership now. "Sign this paper that says BMW/GM/Toyota/etc still owns and retains control over hardware

I have to wonder if that's part of the paperwork at a dealership now. "Sign this paper that says BMW/GM/Toyota/etc still owns and retains control over hardware X/Y/Z. You may utilize this part of your car as long as you continue paying $xx subscription fee." In the good old days, you paid a dealership for a car and you had a car. Everything in the car was yours to use within the legal system of the country in which you reside. That you're now signing away your own rights in order to buy a car is not a good direction.