I disagree that zoning alone is the problem as you see these market developments in almost all western nations and some of them have ample land to build upon.

I disagree that zoning alone is the problem as you see these market developments in almost all western nations and some of them have ample land to build upon. Zoning could be more liberal, but it would still be massive stakeholders that would build new homes and rent them out to get a decent ROI.