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?
Zoning laws are made by people elected by those who financially benefit from stricter zoning laws.
You literally say this in your parentheses statement.
Stricter zoning preferences come after one has a financial stake in housing.
Financialization is the root cause.