NIMBYs are not the sole problem. Vancouver and Seattle, and their suburbs have had a lot of construction happening for the past decade, yet housing costs in both cities have spiraled out of control.
[0]https://fancybeans.com/2018/01/24/65-57-35-how-much-seattle-... [1]http://blog.employmarket.com/2017/03/13/2016-metro-area-empl...