There’s a lot of issues that are a direct consequence of a high proportion of the population having a single family house though, let’s not forget that.
Urban sprawl which leads to over reliance on cars which leads to emissions… And with the hatred towards HOAs I don’t think people want to be told “Sure your can become an owner… as long as it’s a condo or a terraced house or another form of high density housing.”
There’s only so many single family houses you can build before it becomes a nightmare and since population is going up instead of staying the same or going down, well… Choices will need to be made…