The lack of affordable housing is an intentional policy. Take https://twitter.com/bryan_kirschner/status/66776075183092940...
What I thought was particularly perverse was builders lamenting that no one wanted 3 bedroom condos, which is why they were building so few. Complete B.S.! Since they charge per square foot, no one can afford the 3 bedroom condos!
I recall reading somewhere how this will eventually affect the fertility rate. As a couple that waited quite a bit longer to have kids, I can see this being accurate.