Are they really that homogenous? I'm not from the USA, but it seems that there are both republicans (Andreessen and Horowitz, for example) and democrats (Eric Schmidt and Jack Dorsey, for example) among VCs and CEOs. Younger generation might have Sanders-style social democrat tendencies, but there are a lot of libertarians like Thiel in startup circles, though most of them don't mix conservative religious stances like Thiel does.