[dsp1234]

But tesla would still be the manufacturer? How would a dealership benefit in any way?

Tesla wouldn't be able to not sell you a car. The dealerships buy (not really) the car, then they sell it to you. If a dealership is unhappy with your review, and won't sell you something (again, something within their rights), some other dealership would. If the manufacturer is pissed, and doesn't want you to own one of their cars, then they have to convince the dealership not to sell to you. And there is likely to be at least one dealership who would be willing to (or more likely the manufacturer would never make that request because of the power relationship between manufacturers and dealers).

For all the crap that dealerships do, they provide a layer of abstraction between the buyer and the manufacturer. Normally that's a crap deal for the buyer because it's inefficient, but it cuts the other way when the manufacturer is going to be childish about a bad review.

I just have a really hard time imagining BMW coming around and saying 'we got a bad review for a preview event, the CEO called the writer up, and we're banning every dealer in the world from selling a vehicle to that person'.

It's honestly the kind of 'parade of horribles' that the dealer's themselves are spouting in trying to prevent the 'no dealership' model from happening. Except it happened, and that sucks for everyone.