Acknowledge it or not, instead of paying 15,000$, Facebook could have been more remote friendly and people can live wherever they want.
For a company the size of Facebook/Apple/Google they can also have micro-offices in cities further away from the valley.
Employees won't have to relocate, housing prices will settle and the damn traffic on the bridge and the 280 will be less horrible perhaps.
Every time I commute I think to myself, what if suddenly most companies realize that they can have 15-25% of the workforce work remotely without damaging the productivity, how many cars in front of me would just vanish?