The numbers don’t lie: The housing crisis is not caused by a supply shortage
(www.policyalternatives.ca)
I can't speak for Vancouver, but in Ottawa, I'm in a suburb that has a tonne of empty nesters living in 4 bedroom houses. There are young families that could use that space, but the current residents have no incentive to move. Housing is so expensive that selling off and moving to a smaller place would be hard. It's bizarre.