Honest question: why would any new tech entrepreneur want to move to SF? The prices suck, and if you need to improve your network you can meet the vast majority of tech people online (IRC, Discord, email, online conferences). Weather?
It is a major tech center. Probably easier to get VC money, make serendipitous connections, maybe hire talent. (Though, arguably, the advantages are less than they used to be and the disadvantages greater.) And not weather directly but there are a fair number of tech people who, to the hiring point, have trouble imaging living other places because of some combination of weather and culture (and choice of jobs without…
Are most of the bay area developers bay area natives? I was under the impression they were mostly immigrants under H1B contracts that could live anywhere in the US.