Right. The point is that soon they'll need a whole lot more of them, and first party repair centers as well. "Sorry, we have trouble with quality control at 3rd party shops" isn't going to cut it for a mass market car.
Re: Ford and Delorean, this is not the hill I want to die on. But what I mean is that the batteries, charging stations, etc, all live or die with the cars. If they can successfully create a mass market for consumer EVs, sky's the limit. If not, you can see a future where Detroit eats their lunch and the Model S is a footnote.