What about in prison? There may well be Einsteins locked up in our overcrowded prisons.

I don't see why not. I know someone who is quite a bit smarter than me, and was definitely more dedicated in high school, yet spent decades working security (not Walmart, but not rocket science either) and 1-2 other jobs to pay their mortgage because their parents couldn't support them through college like mine could (and numerous other factors that set them back). While they have now gotten a degree and a better job I essentially got a 20-year head start on them.

Despite what people like to believe, even in America the single biggest predictor of a child's success is their parent's income.

Communism had - and has - their share of Einsteins. It's not enough for communism to win. Especially in today's world, where Einstein from a communist country moves elsewhere early on.