I'd tend to believe that if you have a badass business deal that is truly worth 1B, you have know-how to get it off the ground, and have exceptional presentation skills (its all about the sell, at this point) a VC wouldn't say no because a person is black, female, gay, or all 3. VCs are their to make money, and they see white male harvard dropouts with no social life to be a safe bet. Convince them that you have a plan to net a return, that is, convince them based on your MERIT, and you'll be successful.
Meritocracy is based on merit, not "giving everyone a fair chance," even if that's what the author would prefer. Though, that's not to say that a bias doesn't exist.