IMO a percentage which ensures that they don’t monopolize wealth. Their levels of money and resources are so large that it is game changing. Take startups, who do you think funds them? Is it a pension for teachers that’s goes out and gets those precious preferred shares in 5 startups per year or is it the venture arm of gates/below/zuckerberg/dell/..? The wealthy have monopolized wealth. That’s why we end up where one man owns most the farm land in the US.