I don't understand - you think it never happens? Or rarely does? I classify my family in that "rags to moderate riches" story, at least gradually over a couple

I don't understand - you think it never happens? Or rarely does? I classify my family in that "rags to moderate riches" story, at least gradually over a couple generations. I'd say it's more common than not that people with money today did come from families without it a couple generations ago.