I definitely do not want to diss a concept that hasn't been tried out extensively, though I am more skeptical about it than many others - not least because people tend to discriminate "good" neighbourhoods from "bad" using rent level, so we might just see a general jump in rents and property prices that eats the entire UBI and a new unhappy equilibrium is reached.

That said, I think that rich Gulf states show us that it can be overdone, that a completely sheltered life of plenty sucks. It sucks in a very different way than hunger or homelessness, but it gnaws on human psyche too.