We have a UBI system here in the UK, have had for many years. When I used it the amount was about £18k over 3 years, eventually additional taxation of a few percent with a tax free allowance that's quite high applies but many keep below that tax free allowance. For 3 - 5 years they get the extra money. Often spending it on stuff they want including drink, drugs, music, art etc. Many recipients still have to work at least part time or be helped by relatives. We have a catch-all term for the recipients. We call them 'students'. Back in 1990 they only got a bit over a couple of grand a year, 20 years later they had to pay towards their course out of the money but got around £6k a year.