The answer is to build enough for everyone. Building enough can happen in a lot of different ways:

https://www.sightline.org/2017/09/21/yes-you-can-build-your-...

BTW, the two groups that seem to be doing the most concrete work on housing are:

* https://new.yimbyaction.org/

* https://welcomingneighbors.us/

I've learned a lot and it's great to connect with people all over the US doing similar work.