They don't evenly reintroduce their money into the market across the board (a consumer does much better at that) and they are not reintroducing money for the pu

They don't evenly reintroduce their money into the market across the board (a consumer does much better at that) and they are not reintroducing money for the purposes of goods exchange but they are exchanging money now for money future. And they actively try to avoid risk (such as bank bailouts, golden parachutes, guaranteed dividends, etc) so you either make a little or a lot, and rarely lose your shirt. That means inevitably you have more money than you started with, just siphoning more and more off of the populace. Even if you keep cycling the money back in and people get to use it in a theoretically good way, you still concentrate ownership of resources, businesses, and workers as your reinvestments give you ownership of all these things that make you more money to own more things in perpetuity.