Why do you think there should be 300 car companies? Can you point to another manufacturing industry where hundreds of players collectively have significant market share?
Yes. The car industry in the early twentieth century. Car companies coming out of every moderately-well-off mechanic's garage.
Yes, it eventually consolidated. It will again. But we're not going to get from here to there without some competition that just isn't going to come from the established players, for a variety of reasons.
