I know somebody who blocked development of houses that would have disrupted their view. But rather than blocking it through lobbying, they banded up with their neighbours to buy the property that was going to be sold to developers.

This seems like the only legitimate form of NIMBYism to me. OK, you say that building housing here will disrupt your quality of life - then put your money where your mouth is. Andreesen no doubt could afford to do this as well, but obviously it is cheaper to lobby the government to stop it for you.