I've been hearing a lot of talk about entrepreneurs moving AWAY from Silicon Valley too due to the overwhelming competition for talent and sky-high cost of living. Not to suggest SV is going away, but I wonder if you'll start seeing some activity in "tier two" cities that have solid infrastructure. I'm thinking Raliegh/RTP for example. Even Google is exporting some of it's operations to make finding talent easier. Again, not refuting the importance of SV, but wondering if there is an opportunity to build elsewhere with similar resources being exported.
The Silicon Valley Leadership Group actually ranked Silicon Valley at the bottom of their technology hub list for reasons such as you suggest. The NC Research triangle was first.