The "well regulated capitalist environment" of which you speak is the fantasy. It has never existed.

What could exist is a world based on economic democracy, where no one becomes rich or powerful and everyone has to work together because society is structured to prevent anyone from taking power for themselves.

An economy where the stock corporation is replaced by the worker cooperative -- still an independent business operating in a free market of goods and services, but governed democratically by its workers -- would be much closer to that reality. No one would be able to amass much personal power. And any power amassed would always be held in check by the democratic structures that granted it. A world like that would do a much better job of preventing the accumulation of personal wealth way beyond need.