Because he's going to buy it for $20,000. The conglomerate can sell it for $15,000. Who's going to buy it from him. It's a commodity market (so little "customi

Because he's going to buy it for $20,000. The conglomerate can sell it for $15,000. Who's going to buy it from him. It's a commodity market (so little "customizing" benefit), crazy IP with feedback loop (Google and Tesla have more street data than anyone else, so they can perfect their algorithms. As their algorithms are better than anyone else's, people buy there hardware, which gives them more data, ad infinitum. Breaking into such a market will be getting harder and harder for that reason), and quite likely some kind of (strict but bureaucratic) safety regulation.