@stux as I understand (and I'm open to a honest and respectful conversation), billionaires don't keep their money under the cushion. Their wealth is not sitting still on a bank account. It's all assets, which is usually businesses, companies, investments that give people jobs, allow new business to be created, and grow. All of which help societies to offer better and more accessible services and products, improving everyone's lives and creating more wealth for everyone.
@stux eventually some of the benefitted people will have ideas, get funded, be successful, and become billionaires themselves in a virtuous cycle.
In general, countries with more billionaires have a better overall quality of life. There's a positive correlation.
They are not simply hoarding money.