Indeed, if there's no second source OEM provider of compatible Tesla parts, then the reason for stupid expensive Tesla repairs is simply that Tesla makes more profit/share price improvement from selling a new car over repairing an already sold car.
At least until people start to consider them unrepairable.
Tesla can void your warranty at any time. Tesla can remotely disable features on their vehicles. It's a tough job repairing something that you then cannot guarantee in any way.
Which, like, someone should sue Tesla for violating the CFAA when they do that. If you bought the car and you own it, Tesla remoting in and changing things on your car is a CFAA violation.
So can Apple, but people get iPhones fixed all the time. Of course, a car is 40-80X more expensive than a phone, so stakes are lower for someone seeking out a non-licensed repair shop.
But it probably comes down to right to repair, and can Tesla be shown as impeding this right. My guess, is yes. But I also think, as usual, the authorities are reluctant to penalize Elon. He makes such a stink about such things, they'd rather penalized John Deere.
> With Activation Lock, your Apple ID password or device passcode is required before anyone can turn off Find My, erase your Mac, or reactivate and use your Mac. Even if you erase your Mac remotely, Activation Lock can continue to deter others from reactivating your Mac without your permission. All you need to do is keep Find My turned on and remember your Apple ID and password.
At least until people start to consider them unrepairable.