The numbers don’t lie: The housing crisis is not caused by a supply shortage
(www.policyalternatives.ca)
What is the reason, besides finacialization, that restricting supply makes sense?
It sounds good to voters. Zoning is basically a promise to keep the neighborhood free of things you don't personally care about under the guise of thoughtfulness. Current owners like that, and it's too abstract for most of the people who lose from it to care about.
Same reason they scream bloody murder when it goes away. Calgary's zoning just got forced back in.