hoarding what?

you could dekulak all 3500 billionaires, magically transmute their make believe money into hard cash, and that $20 trillion would yield less than $2500 per human. hooray?

You say that as if there aren’t an enormous amount of people for whom $2500 isn’t an enormous amount of money. Even in wealthy nations like the US, that equates to approximately 7% of the personal income for the average person. But for the 65% of the world’s population living on $10 or less per day, that is an increase of 77% or more on their yearly income.

But more important than the cash is the power that money buys. Defenestrating the uber-wealthy of their undue influence in society would have far reaching benefits beyond just money in people’s bank accounts.