Maybe more people should move out of the bay area? Especially if they have kids? It's so much cheaper essentially everywhere else. Even with a salary cut I would imagine it's worth it in many situations.
Yeah, I'm not disagreeing that the economic unit versions of these families would move to a place with a better salary/cost-of-living ratio. Moving takes time; the advent of eye-popping living costs in SF is less than 4 years old. Moving a family is a big deal. There is data that suggests that moving children in their teens more than doubles their risk of mental illness and criminal behavior. Certainly the U.S. has the lowest barriers to relocation, but it's not a trivial undertaking.