It’s not if nobody owns it but if everybody owns it.
If a landlord owns it, f the landlord.
If the govt owns it, f the govt.
If you and everybody around you owns it, some will take care of it.
Of course there will be lazies too. 80/20 rule.
Something has to bind. Family, religious doctrine, internal rules, guidelines.
There’s no fundamental difference between a property that’s “paid off” and communal ownership. It’s the same except how you got there.
Fear of homelessness is what keeps US properties moving. Why do US citizens fear homelessness? Because homeless are systemically mistreated in the USA.