UBI is implemented tomorrow. Every citizen gets $1000 per month.
Landlord now knows you have an extra $1000 that you never had before. Why wouldn’t the landlord raise prices?
Now you have an extra $1000 a month and instead of eating rice and beans for a few meals you go out to a restaurant. The restaurant owners know everyone is eating out more so why not raise prices and maximize shareholder profit as always. The restaurant/corporation is on TV saying, “well, demand increased and it is a simple Economic principle that prices had to increase. There’s nothing we can do about it”.
Your state/country has toll roads. The state needs money for its deficit. UBI is implemented and the state/country sees it as the perfect time to incrementally raise toll prices.
Next thing you know UBI is effectively gone because everything costs more and billionaires keep hitting higher and higher all time net worth records.
How about not from government but rather a private consumers union. A Costco model. Every member pays the monthly dues and is entitled to housing, food, medicine, internet. This gets you around a lot of the government corruption and protectionism and enables you to turn faster. The organization has a great deal of bargaining power because of it’s size.
You seem to be trying to solve a different problem. People who are working full time should be able to get all the necessities. It’s definitely a problem that they don’t. But if you believe that everyone should be able to feed/house/clothe themselves, including people who don’t have stable incomes (e.g. are in between jobs, busy caring for disabled folks, are disabled themselves, or going all in on building a bootstrapped business), then we need a system that doesn’t require you to have money in the first place to get the benefits.