There is a huge demand and little supply at least with semi-detached and detached  homes. There is a lot of newly rich people from countries ie China and others with big bucks who can buy. The housing situation is out of balance. Laisez faire is not the answer here. This would almost be like allowing Amazon to have a monopoly over online retailing. People with lots of cash can easily take over if we allow that. How many billionaires and millionaires does China have as opposed to Canadians.