This was the subject of a HUMA committee study not too long ago.
As you said, the research we've commissioned has clearly shown that financialization in the purpose-built rental market has caused great harm. It's not just a causal effect; there really is a correlation, especially in targeted areas.
The recommendations we had made at the HUMA committee included ensuring that real estate investment trusts are properly taxed, because they are subject to a tax loophole. We would also recommend instituting a capital gains tax on properties transferred or distributed to financial firms.
Of course, the GST rental property rebate that we talked about was extended to co-op housing, which is really wonderful.
Another recommendation would be to ensure that any public funds given to the private market actually come with strings attached to ensure actual affordability, which has to go beyond the first renter and the first buyer for investments in home ownership.
Of course, it's also important to look at the investment trusts—especially the federal investment trusts—and the pension funds need to be looked at to make sure their investments are not actually leading to social harm, because right now they are.
There are many more measures around security of tenure that need to be looked at as well.