The question is how many people really need to travel between the Bay Area and SoCal? Right now it is about 12 million trips a year. That would increase if the link is cheaper, but to what economic gain? These two areas are strongly connected economically, not like NYC and DC are.
Ya, those areas are strongly connected. There was a typo in my above reply, I meant to say that SF/LA are not as strongly connected economically as NYC/Boston/Philly/DC.