(And no, disbanding all governance will not make power spread itself evenly among everyone - it's not a stable state. We'd be back to having warlords instead.)
RE Tesla, they took some DOE loans (inb4 someone pops up with "evil Musk eating taxpayer money" again - loans which they paid back in full and way before the due time) that were important to their growth. It's a textbook example of why those loans, and other grants, exist in the first place.
I agree that all the problems you mentioned are real and important. Governments do create nasty issues. But they handle some things well. Markets too have issues, just different ones, and also have terrible failure modes in other areas (which include bribing governments into changing laws to benefit them instead of the general population). Personally, I'm advocating for dropping the ideological approach and just evaluating every problem on its own, whether it is solved best by top-down governance, bottom-up free market work, or some combination of both.
I agree that we need both. Basic research is a good example. I'm not familiar with the economics of electric cars, but you might be right about Tesla too. But beware the easy incrementalism of this all. Each step is logical and difficult to oppose on its own, but the collective result is a society drained of its dynamism and freedom. And then the real kicker is that the government programs that you sacrificed them to don't work. They become barriers to entry for competition, vehicles for political pork, permanent bureaucracies that lobby for their own existence, and more opportunity to waste other people's money.
As an aside, businesses do have a very good reason to continue to serve the public interest: they need to continue to create value for their customers, or they soon won't have any.