What you actually see in America is that most millionaires come from humble beginnings. That doesn’t mean most people from humble beginnings become millionaires. A->B does not equal B->A. Basic logic.

Go talk to the owners of the five nearest local small businesses, ask them how they started, and see how it goes.

Speaking from experience, btw.

Well, as another commented pointed out, there is a difference between innovating and starting companies. So I would argue that you do see more innovation from poor families than rich families. After all, rich families have no need to innovate, they just throw money at problems until they go away. Poor people are financially constrained and have to think outside the box to solve their problems. But you also see more companies started by rich people. Not necessarily innovative companies, mind you, just companies.

In my travels in Brazil I saw some incredible hustling going on in poor areas.