I mean, this sorta bolsters the idea that livable space is rare and valuable.
Of all of the universe Earth is the only place capable of supporting human life. Furthermore no human has ever managed to leave the earth/moon system, because of the extreme effort and risk required to do so.
It's literally the same concept of stores only allowing 1 item to be purchased, to prevent someone from coming in and buying all of them. Limit 1 per customer.
Because if no one was paying rent, (eg: under a theoretical system of universal basic shelter) what would be the benefit of hoarding more than what you could use?
It's valuable and precious the same way air and oxygen are valuable and precious, and while we charge a little bit for water, we don't charge >50% of someone's income for them to have access to water, then remove their water if we arbitrarily decide they're not drinking it properly, and make them submit a 7 page document and provide 4 references to get a cup.
That's the problem, there isn't even enough for everyone to have one. There are no left overs.
This is why pretty much everyone I know at 25-32 years old, now live at home with their parents. Not only is it unaffordable thanks to landlords profiting off them, but there aren't enough to even go around.
I’m just talking because there’s probably no realistic way to make it possible at this point, but assuming countries could “buy back” houses from landlords until they have enough for everyone, I wouldn’t mind people having more than one house as long as everyone has at least one.