These people aren’t “literally” fools - they didn’t get to become high-net worth individuals by making silly decisions. Rather, they are fools in the figurative sense (”anyone investing money in Jimmy’s new venture is surely a fool.”)
How do you find these individuals? For most young entrepreneurs, it isn’t easy, as they have not yet amassed a large professional network against which to tap. In any event, the only way to really get to these individuals is through good old fashioned networking. Get out to every local professional event you can find. Throw out your pitch to anyone who will listen, and start following up. Soon, you’ll have built a pretty sizable list of contacts that you can leverage to try and raise the cash you need.