Can add Wozniak and Jobs in that too, with a garage--Jobs a college droput (like Gates).
The “Great University” is not for the entrepreneur, it is the source for the smart people that the entrepreneur will probably need to hire.
It is also the source for a great deal of useful advice and possibly some research.
Wozniak and Jobs both made considerable use of people from nearby Universities to build Apple Computer. Edison, not so much.