Well, their wish to move into a desireable area has no power over those who already live there. The bay area problem is easy to solve, though: tie the number o

Well, their wish to move into a desireable area has no power over those who already live there. The bay area problem is easy to solve, though: tie the number of office space permits to the number of single family houses. With such a law, a big corp won't be able to build another tower and bring 5k more employees there. What prevents such a law from happening is greed: the SF city council understands that there's no room there for another 50k office workers, but it can't resist the payroll taxes those will bring.