Almost everything you've listed is provincial jurisdiction. We don't have a national securities regulator because the last attempt at one was struck down by the SCC. Most business regulation is provincial, zoning is provincial, property taxes are provincial etc.
The BoC controls interest rates, but they act independently, the PM has no control over what they do beyond who they appoint to run it.
The only way they can get involved is with federal-provincial agreements. The provinces have deep connections with developers, so they're not going to do anything about the real issues of restrictive zoning and so on. Just look at Doug Ford and the Green Belt fiasco.
If you want to fix housing, go after the province. Agree or not with what they did, interprovincial pipelines are a federal responsibility.