They sell something that
feels like a free, unrestricted, perpetual license to use the services "that come with the car". But when you buy a car it's natural to think that it's yours in full, as much as a banana you traded for a peanut-butter-and-jelly sandwich in the lunchroom was unequivocally yours.
I agree that legally it's probably no different than any other modern TOS or EULA: you own nothing, you have no rights, the company can do whatever they feel like and change those rules at any time. I hate the amoral, greed-driven, power-differential-enabled lack of true ownership that these agreements cause. I like the idea of something a simple right to use a Tesla service that lasts as long as the car does.
I'd be willing to come to an agreement on where in the ship-of-Theseus debate the car is no longer the car, so you don't have vehicles that have been crushed in trash compactor being stripped for their Supercharger license or SIM card and that Supercharger connector/key installed on a Leaf or SIM card installed in a phone, and you don't have used, serviceable vehicles sold without those licenses. I'd prefer open to the idea that those rights are separate from the vehicle, purchased by an individual, able to be sold by an individual.
I wonder whether my son will think he owns his car or the software that runs on his computer 30 years from now, or whether he'll just be subscribed to services that provide a temporary, revocable, non-transferable right to everything he uses.