I think you go too far. I too have a deep dislike for dealerships, but they are not useless. Specifically, it's a place you can go to test drive cars and they have OEM-certified garages for warranty repairs. Can't test drive when you buy online.

I think the main problem with dealerships is the government granted monopoly. If a dealership is in a region, most states prevent any other dealership from setting up shop in that region. That's why so many of them are passed from father to son like a dynasty. No competition at all -- and they act like it.

Restore competition and the "stealership" aspect should go away.