To give you an idea of who is on the tesla board of directors, it includes Kimbal Musk, his brother, and James Murdoch, of the Murdoch family you’re probably thinking of. Musk himself owns something like 20% of the company, the board owns some, his cult members also have some share. The rest of the shareholders are either institutional or retail investors who are some combination of not willing to rock the boat, don’t have enough voting power, and/or just don’t care.
Power, water, internet, healthcare, education, transit, there’s a lot of things that should be public utilities or at least with a convincing public option because of the clear conflict of interest between private corporations and social benefit, but aren’t, because money controls politics.