1 unit of currency today has a different value 10 years from now.
It appreciates

So if the rich have 10,000 units of currency today and the poor have 10
in 10 years the rich will have 1,000,000 units of the same appreciating currency while the poor will have 100.

It is a zero-sum game with a touch of ponzi. The entirety of the market, from milk to housing is based on that very same appreciating unit of currency that will buy less and less for the poor guy and more and more for the rich.

and this is exactly what happens