This isn’t a matter of supply and demand, of investors taking 80% of all new houses, of foreigners laundering money, or of NIMBYs. These are all red herrings. These are all secondary effects of a bigger problem. These are all ways to ignore the real problem.
No amount of policy will slash house prices in Toronto by half, and no policy will double your income to match the increasing prices.
I suggest you stop looking for policies, because by the time any of them take effect and reverb through society, long enough time would have passed that you’d spend your whole life renting and paying off someone else’s mortgage anyway.
Now ask yourself if that’s the future you want, and act accordingly.