I suppose Zuckerberg could use some of his incredible wealth to help fund democracy, literacy, and economic development in the Third World, but that would cost him money, at least in the short run. Clearly, he's having none of that.
However, by funding revolutionary causes in America, Zuckerberg can exercise his raw power to help create anarchy and chaos while entrenching himself ever more deeply in the ruling class.
In terms of business models, he's chosen Soros over Buffett.