The whole economy is allowed to exists to “feed” the rich. Money doesn’t matter in this scenario.
So as an owner of 1 million robots, in a world where there are 1000 rich people to serve, I can have 1000 robots per person to serve them and can do everything for them.
Why do I care about the rest of the population? Why I need them to consume my resources? I already have all the power in the world. I have food, health, security, scientist etc. I don’t need the rest of the humans for anything.
Why currently “the rich” need the rest of humans is: you need baristas, servers, builders to help save time and make life enjoyable for most humans. then you need office workers to do the research, manage wealth of a richer category. So all this chain is needed such as top 1000 people have: housing, food, health, security, etc. that’s all they care. They don’t need the money. That’s the real power.