More what I was trying to say is that we're focused on short term gains in affordable housing (the 25%) instead of maintaining our current 12% and focusing on total volume of new housing - whether it's luxury or not.
I would think the biggest concern is creating a twin bubble of tech startups and housing. Then when the tech bubble pops you get all the real-estate developers soaked by the sudden calamitous drop in the value of the housing units they put up (which assumed a steady supply of people moving in with six-figure incomes).
Fascinating to see actual studies supporting what the free market is already pushing for, more luxury housing.