The rise of corporate landlords provides the incentive for all these bad actors. Fail to solve that and the gaming will surface in a new form in ten years. RealPage and other cretins are in business because they have only to make a dozen phonecalls to rental agents in any given city/municipality and they've got the bulk of supply co-operating. Any state/federal government that takes cost of living seriously will do everything it can to keep residential real estate ownership highly fragmented; anything else amounts to a default on citizens.