And looking at these last few replies, it is clear that SFO isn't doomed. WN didn't have any SFO service for years. Now it has a modest amount. B6 was all about OAK, and has shifted almost everything to SFO. AS OAK service is a fraction of its former self, everything else is from SFO. UA, after having a maintenance base @ OAK, and flights to all of its hubs along with shorter west coast hops, eventually pulled out completely and it is all SFO.