I guarantee that if the collective influence of some of the world's most powerful companies wanted there to be more affordable housing, either out of some noblesse oblige like you see in NYC, or because their employees really turned the screws on them, it would get built.
Tested and disproven.
Google tried to develop thousands of new units of housing in 2015 and was rejected by the Mountain View city council.
If you see my comment up-thread, this can only be successful when it's premised on a broader coalition with clearly stated values that oppose the ownership class. Mountain View can shutdown Google because they can just paint this as tech industry villains trying to screw over "the little guys." The only way to get redress for affordability is to first pursue it for the most disadvantaged and rob the ownership class of the narrative that undergirds their political support.
Tested and disproven.
Google tried to develop thousands of new units of housing in 2015 and was rejected by the Mountain View city council.