I agree to a point, the intelligence may be in their accountants & CPA's.<quoted text>
Some of dumbest, most ineffective people I have ever met have been very wealthy. You have obviously confused greed for IQ.
The wealthiest person that I have personally known would tell you that he was under educated but that in the beginning, he worked harder, longer & cheaper than his competition & then hired smart people to grow his businesses. He was eventually worth 8 digits LIQUID, HIGH 8 digits gross & employed something like 170 people when business was slow, over 200 in his busy season.
I stand by my previous statement since I have also known near witless wealthy too. It is the people that they hire to 'work' their money that makes them wealthy & keeps them that way. They don't have to personally know everything.