They don't have to "up and move" all at once; they could easily have just capped their SF headcount and expanded offices in other cities. Then the CEO starts sp

They don't have to "up and move" all at once; they could easily have just capped their SF headcount and expanded offices in other cities. Then the CEO starts spending more and more time in one of those "remote" offices, then they declare that desk to be their primary location, and before you know it, the company's de facto HQ is somewhere else.