This guy is a fucking jerk.
When confronted with something that conflicts with his worldview that the rich are bad, he cooks up a bunch of caveats and concerns so he can keep his current worldview.
Many of his arguments aren't even right -
> Wealthy donors don't tend to prioritize lower-income communities, communities of color or other marginalized groups as beneficiaries of their giving.
You mean, like, eradicating Malaria in Africa [1] or funding the USA's worst performing school districts [2]?
Jerks like this have been beating the "the rich are evil and don't care about poor people drum" for so long that they can't adapt now. What's this? In addition to building world changing companies, they're also giving the wealth they got personally to charity? Well, it's still not so good, because you know the rich are evil and don't care about poor people.
I'll say it - he's a jerk. When confronted with effective pragmatic people moving into his backwards-poorly-managed idealistic space, he complains and slings mud and adds doubt.
Screw him. We need less people doing stuff that he's doing, and more people doing entrepreneurship, taking strong pragmatic action to fix problems, and giving voluntarily.
[1] http://www.gatesfoundation.org/topics/Pages/malaria.aspx
[2] http://techcrunch.com/2010/09/24/techcrunch-interview-with-m...