I suspect that a great many of these individuals share the following traits:

- extreme intelligence

- experience riding an extremely succesful company to the top

- conifdence from that ride

Many of these folks were in the right place at the right time however, and do not neccesarily have the experience as investors and business advisors.

Should be interesting though. It doesn't matter how they got the money, they are putting it to work, and the relative efficiencies that startups have today vs 5 or 10 years ago will make these investments even more effective.