Welcome to the Bay Area, where the only people who can buy houses are those that can funnel the retirement funds of the world into their pockets. The answer fo

Welcome to the Bay Area, where the only people who can buy houses are those that can funnel the retirement funds of the world into their pockets. The answer for us is that all the local service providers live far outside the core urban areas and have terrible commutes. Or they double or triple-up, multiple families per unit. As the area becomes increasingly unlivable for people that do the local gruntwork, a number of them leave the metro area. Those that stay have less competition, and so they start charging higher wages. Eventually the local economy equalizes at a much higher price point; local service workers find they make a livable wage again; globalized tech workers find that most of their income is eaten up by daycare, housecleaning, gardening, and restaurant meals out (to say nothing of housing); and the whole region settles into an uneasy truce, yet enjoys great geographic arbitrage opportunities over other regions. We can go make Halifax unaffordable and live like a king there, for example.