Don't we have a housing shortage? Also, many (institutional?) landlords are happy to leave units vacant and/or evict tenants spuriously for higher profits.
Yes we do. The OP's point is that _if_ there is collusion, building housing will help solve the collusion problem _and_ solve the housing shortage.
Spending effort on theoretical collusion which may or may not be happening is a diversion from the real problem, which is lack of housing supply.
Explain the economics of keeping units vacant in the face of increasing supply.
Yes we do. The OP's point is that _if_ there is collusion, building housing will help solve the collusion problem _and_ solve the housing shortage.
Spending effort on theoretical collusion which may or may not be happening is a diversion from the real problem, which is lack of housing supply.