My theory, if it holds, says that a bunch of 20-somethings flooded into SF in the past 2-3 years. When they reach their early/mid-30s, they will begin their nesting phase.
They'll want to find/will have found their mate and will want a house with some space.... The chance to finally to get out of their dumpy studio/3-bedroom-with-roommates... Some well-deserved adult digs, after years of hard work in this industry.
However, they'll look around at house prices, look back at their bank accounts, and realize such dreams could never be fulfilled here.
At that point, they'll pick one of four paths:
-Buy property in a remote, suburban sprawl-y part of the Bay Area (an unattractive option to anyone who's lived in SF for many years)
-Buy some depressingly expensive one bedroom condo and stay here
-Become a lifetime renter
-Move away from the Bay Area ('back home', or elsewhere)
In my opinion, a 30-something, on the verge of midlife crisis anyways, will take one more shot at the great unknown and set out for a new region, outside the Bay Area.
Unless, of course, they sold their startup for 8-figures and escaped with a big chunk of compensation.
Thoughts?