The numbers don’t lie: The housing crisis is not caused by a supply shortage
(www.policyalternatives.ca)
The irony is that decreasing the value of homes really is the inevitability. Because rezoning encourages redevelopment, that redevelopment generally includes more dense and theoretically more affordable housing types. But developers still want to make money, so they are built to maximize profit, not affordability. So it suggests that if they sell, other houses have less demand, and demand will fall. But that hasn't been borne out.