Every time I think about Bay Area rents I feel really sorry for my artist friends who grew up there. They will never be able to move back home.
Those we should feel sorry about are those driving the buses, stocking the shelves at Whole Foods, cleaning the floors at the tech offices, delivering nursing care in hospitals, teaching the children, etc.
But that bus driver? How do they provide their labor to the city (and thus the people in the city who need it) when they can only afford to live far away? Same with the grocer, and janitor, and any number of "normal" professions which don't command enough wages to allow them to live in the area?