https://www.youtube.com/watch?v=7iqz-mlYwRo
Tesla doesn't have a legal ground to stand on here and would lose in courts, but it would also cost way more to the person trying to sell his or her own property. The litigation itself would be more than the profit margin unless you do this as a trial/civil lawyer and can litigate it yourself.
Ferrari has banned sales to people and this seems within the rights of a company to do (so long as it's not based on specific discrimination like race or sex).
I personally would never buy an Internet connected vehicle, and I'll never buy a car with access to cell networks. Cars made before this decade are going to become insanely valuable as time goes on.