A professor once told me "It's common to see 'A' grad students working for 'C' or 'D' grade students.", I think what he meant was that 'A' grade students would never take the risk of starting their own business against odds, while 'C' or 'D' students sometimes do not have that many choices, so it's easier for them to take the not-very-calculated risk.
Then again, all these guys were above average smart for sure and ahead of the time.