Do you ever get tired of being wrong about everything?
Far from “hoarding” wealth billionaires are said to be worth billions of dollars, euros, pounds, yen, etc because they have a net worth equal to that. A net worth is comprised of cash on hand or in a bank, plus assets, minus liabilities. Those assets include their house, vehicles and (most importantly) investments. Those investments, purchased with money left over after paying much more than their fair share in taxes and living expenses, are being used to create and fund businesses. In other words the wealth of billionaires is being used to create new wealth that benefits everyone.