Are you implying that it's impossible to construct an additional 31,000 homes across all of Canada?
If 100% of those units were converted into AirBnB that's another problem: why is the demand for short-term rentals so much higher than long-term ones? Again, not really AirBnB's fault.
I know that's partially the case in Ireland of why it's so hard to get housing. Landlords can make a full year's rental salary over the summer with AirBnB...Why rent long-term when you can do that?