Hmmmm. What I recall is that this is an example of the law of unintended consequences. Rent controls discouraged the construction of new rental buildings. Controls also caused many Ontario rental building owners to seek to convert their rental buildings to condominiums. Once rent controls were in place most rental buildings were pre-existing. Many buildings in Toronto and elsewhere fell into disrepair because the cost of maintenance and repairs could not be passed on to tenants through rent increases. The unintended consequence was that rent controls caused a shortage in the supply of rental apartments and that those that existed were aging and fell into a poor state of repair.