In Canada they say we have a housing supply problem. I think about that a lot on my morning drive to work as I drive by row after row of massive houses with nobody living in them.
I would like some houses without people. Having a little surplus is usually a good thing. So like if some houses become unlivable, we have houses for the suddenly unhoused people.
I guess they mean it from a sustainability perspective. Stop building homes that aren't being used to house people, ie, stop building homes for speculators.
That part of things could be aimed a China. They have something like double the amount of housing their population needs. To someone in a country with out of control housing prices, that might sound like a good problem to have, but it's still wasteful.
You aren't allowed you move out of a home unless someone else is moving in. We can all create a chain like hermit crabs or those organ donations to help find more completed solutions. You know, I was being facetious but this would actually be doable....
Most people buy with a mortgage, so that is functionally exactly the situation they are in. Most property transactions are part of a chain, and if any link in that chain fails, the entire thing, which can be many links long, comes to a screeching halt and possibly collapses.