The most counterintuitive fact about urban/housing economics: Only volume of new housing relative to demand matters. You solve housing crisis buy zoning high vo

The most counterintuitive fact about urban/housing economics: Only volume of new housing relative to demand matters. You solve housing crisis buy zoning high volume of apartments and the zoning is dense with good public infrastructure and transportation. That's all. Research shows that if you build a new expensive apartment, it starts a avalanche of people moving and just 2-4 steps later someone with low income gets into a new apartment. Background assumptions: no empty apartments (this can be fixed with tax) , no NIMBY limits for housing quantity or quality.