No, a bunch of idiots such as yourself inherit wealth, but the statistical truth is that the vast majority of wealth is earned, which requires real intelligence, and not a "post-graduate degree."
I certainly agree with you that a post-graduate degree doesn't necessarily require intelligence. I just don't see any reason to believe that acquiring money does either. Plenty of merely lucky or workaholic people are successful aquistive types, and there are plenty of intelligent also-rans. I think you would like to believe that aquisition of wealth imparts some Calvinistic mark of superiority upon the aquirer, when really it is just an ethically neutral condition.