I think you can buy "brain"(informatio) for money. But you need initially some brain to think, that you don't know something, and you need to buy an expert, who would describe you a problem and how to solve it.

Problem of "stupidity" is comformity and schema. He has a schema that oil is the best investmen. Oil is a black gold. He doesn't need to be an expert in somethin, when he has money and women. He lives comfortable life.