But I dislike the common implication in the headline, which is that intelligence somehow always equates to wealth.
First of all, it's not always easy to judge how wealthy another person is, no matter their profession or outward appearance.
Secondly, I think we all need to disuade ourselves of the notion that everyone in the world wants to become wealthy. Plenty of extremely intelligent people are perfectly happy where they are and are perhaps smarter for not chasing wealth like all those genius entrepreneurs. Just look at the lives of those we idolize so much for their success. Do you really want that life? A lot don't. And there is a good chance people more intelligent than those "successful" people don't want that life either.
Additionally, I know quite a few wealthy people that are rather dim. But they were hard workers and an opportunity presented itself because they were at the right place at the right time and they took advantage of that opportunity and worked it dry.