[randallsquared]

Some 20% of US billionaires grew up poor, or at least without well-off parents. 60+% were upper middle class or below. So, I think we can note that they've created enough value for the rest of us and deserve to keep the fraction of that value that they were able to negotiate.

[nullocator]

What is the demographics breakdown on those statistics? How much is old vs new wealth vs generational wealth?

A lot has changed in the U.S. in the last 20-40 years.

Also I'm not really convinced that the existence of individuals with over a billion dollars in wealth is a net positive for society or really anyone except that individual.