And this would solve the problem how? Bill Gates owns less than 1% of his company, but now Microsoft under Private Equity is several times more evil, not less.
Why do you think that democratic control means private equity?
Why do you think state control is democratic
It's because while for some people there may be jealousy involved, many more have realized or are now realizing how much power the ultra rich have, and how bad that is for our societies.
Once a company becomes large enough, it becomes so influential in society that control of it must be made more democratic.
I don't think anywhere has figured out quite the right way to go about it yet, but it's clearly the right goal. Some countries require employee representation on the boards of large companies.