What's stopping existing car companies from doing direct sales like Tesla? Removing barriers to customers giving you money is generally a win. How many Tesla's were purchased in the last year that wouldn't have been if the stressful dealership was in the way?
How about a subscription / lease deal where they ship you the new model every year? Sell a cheaper tier for the 2nd year used vehicles. Do telemetry on driver safety and charge accident-prone drivers more! Replace/bundle/improve car insurance while you're at it. Are there regulatory hurdles preventing this for a company like Ford or Toyota? Is it just organizational momentum stalling these changes?