While there are always exceptions that prove the rule, there is the rule. And the rule says that the internet industry lies in the SF Bay area.
Examine it under any metric you wish, quantitative or qualitative and you will end up in the same conclusion.
I have gotten more into this matter in a past post of mine: http://20minus.com/wp/2011/03/20/how-lean-startup-forced-me-...
cheers