Mike Daisey’s article, though written from a perspective well outside the open-source community’s, does a good job of explaining why I have to agree with RMS on this one.
Almost 30% have a yearly household income between $50,000 and $100,000 per year, 56% are either married or in a relationship, 43% have full-time employment, and 37% consider themselves libertarian or anarchy-capitalist.