I too am intrigued by the move to SF away from the Peninsula/Valley. I think though it's a subset of the "Software eating the World" thesis. You can now build much bigger companies with fewer people who are younger (no middle management) and get them significantly further along. So you don't need that campus to house 1000 employees to build a $100 million company as in the past. It'll also be interesting to see if startups begin to leave SF if they really get big. I hope not, but am curious.
