Honestly it would not be all that easy to stay rich for everyone, "some" has to be poor so that rich could be rich. Getting rich is not really like "take their money" type of deal, its mostly just your stock value.

Look at all the "rich" people in the world, they barely have any money, most of them do not even have money, I would be shocked if I learn Elon Musk has 100 million in cash, he probably doesn't. What does he have than? He has companies that worth a lot, stocks, so his stocks worth something, and he takes debt against that stocks value and if anything happens, he would sell the stocks to pay the debt, avoiding tax meanwhile as well, and never has his own money, never need to. That's how the system works, so believe me, being poor means you just don't have stock value.