In the American golden age of capitalism from ~1950-1970, the top marginal tax rate was 90%, and so you didn't have CEOs get paid more than about 3x the median worker, because the government would get it all. Instead, they got perks. Private jets. Positions at the company for their kids. Debaucherous holiday parties. Casual sexual harassment of secretaries.
In Soviet communism, all production was centrally planned by government bureau run by party members. It was not uncommon for these bureaus to make mistakes, leading to severe shortages for the population. Nevertheless, these shortages never seemed to really hit the party members responsible for making the plans. Power has its perks.
And that's also why reforms attempting to reduce economic inequality need to focus on power rather than money. There have been a number of policies that do meaningfully raise standards of living for the poor: they're things like the 13th amendment to the (US) Constitution, the 1st amendment, the jury trial system, free markets, anti-monopoly statutes, bans on non-competes, etc. What they all have in common is that they preserve economic freedom and the power to make your own living against people who would seek to restrict that freedom and otherwise keep you in bondage.