> IMO you shouldn't get to be in charge of a company just because it became successful.

In a macro sense, the prerogative there is really up to the public. Companies only exist in the first place because the public has granted them the legal and social framework to exist, and the public can adjust that framework as they so choose.

In a more specific sense, the math there changes once a company makes itself indispensable to the public good. There are any number of analogies I could run with, but I'll go with the analogy of a landfill. Suppose all the landfills in your city have been privatized, have a habit of burning garbage, and employ armed thugs to prevent any visitors to the landfill from wearing masks. If you've got a truckload of garbage to dispose of, you can either ingest burning garbage fumes, or dump it on the side of the road somewhere. It's absolutely in the public's interest to regulate the landfills' behaviour to prevent them from both burning garbage and from stopping people from wearing masks when they visit the landfill.