We've been okay for a while since we use the influx of cash from new developments to support our existing maintenance obligations, but that adds new maintenance in the future.
It's functionally a Ponzi scheme, and now it's starting to unravel. It'll happen in the U.S. too, just slower since the U.S. is bigger.
Meanwhile the average salary in Toronto is $52k USD per year[3], versus San Francisco's average salary of $109k[4].
So that might give you some idea.
[1]: https://www.cbc.ca/news/canada/toronto/toronto-home-sales-1....
[2]: https://www.zillow.com/home-values/20330/san-francisco-ca/
[3]: https://www.payscale.com/research/CA/Location=Toronto-Ontari...
[4]: https://www.payscale.com/research/US/Location=San-Francisco-...
Construction used to happen a lot more than it does now. Demand keeps increasing, but the supply isn't increasing as fast as it used to.
Every homeowner who treats their home as an investment vehicle is game theoretically forced into NIMBYism so that the rich get richer.
Not only that, but when filing out immigration petitions, most firms will actually file in Canada and the US. Workers who can't meet the higher bar for US immigration will be sent to Canada.