I would argue the latter 2 arguments have some bearing, but imo it's more about cheap capital coming in from many directions including locally for so long in combination with artificially choked and inflated development processes for decades. For example, there's a parking lot with an old grocery store sitting there at the busiest transit hub in the U.S and Canada. The proposal to redevelop the site has been repeatedly stalled every year for what is now 6-7 years, meanwhile only the most meager development projects have gone forward in the same neighborhood. That said, because of the other reasons, as soon as it hypothetically went up, all of the units would be purchased by speculators because they'd be wildly out of reach for any regular person anyway, due to decades of the other crap.

I went to an open house yesterday for a modest one bedroom with no interesting view or extravagant features, listed at $750k. When I remarked that the cost of the mortgage alone would be a multiple of 2.5 - 3x our current all-in expenses, he simply suggested that in 5 years I can just move out and hang on to it, renting it out to someone and keeping another unit off the market.