Thanks - I hadn't thought to mention the risk of trying to raise rent but it's a good note. I was mostly getting at how the conditions in the UBI scenario ("everyone could pay $1000 more in rent if I insisted") is often true now and the 1:1 rent raising wouldn't happen under UBI for similar reasons that it doesn't happen now.

I also think people tend to under-rate the softer side of landlord / tenant relationships[1]. It's better to have a tenant who you get along with and who cooperates with how you want to rent a place. It's nice not to fight with your landlord. There's some economic value there too, but it's hard to quantify. I'm kind of interested in housing interventions that ban large companies from holding too many units of housing. It mostly "puts a ceiling" on how much profit one company can derive from many rental units, but actually I'm not sure I care - and trying to maximize the human connection between the person who owns the building and the people who live in it seems sensible.

[1] To be fair, when push does come to shove, a reason to under-rate them is the landlord looses some months of rent while the tenant becomes homeless. It pushes people towards strategic thinking.