You might not care about fixing your own vehicle, but you probably care about the cost of those repairs. If Tesla is the only company that can repair your car,

You might not care about fixing your own vehicle, but you probably care about the cost of those repairs. If Tesla is the only company that can repair your car, they can easily charge many times the cost of the repairs. If Tesla is the only place that can repair your vehicle, you're left with two options: pay whatever Tesla demands to fix the vehicle or replace it with a new car. That's a very bad situation to be in because there's no control on the pricing. Even if you say, "well, I could sell the Tesla rather than repair it," how many people are going to want to buy a broken Tesla? How do you explain to them, "It's totally mendable, I just haven't done that because. . ."? You'd basically have to tell them that they're buying a car that Tesla charges extortion fees to repair. Even if you never want to repair your own car, even if you never want to go to a third party for repairs, you benefit greatly if you aren't single-sourced for repairs. Even if you will never take advantage of it, some other people will and, as such, Tesla would have to be competitive on price.