I am struggling to see the benefit of basing your startup in SF if you are not a frontier AI lab? It seems to me that the talent quality outside of these frontier labs and associated companies (companies founded by alumni) may fundamentally be no better than anywhere else in the world, but demand twice as much as the "SF premium" only to leave after 6 months for the next big startup. Because of this, I could probably get more bang for my buck starting my company in another tech hub, such as LA, London, Berlin or Tallinn?