UBI already existed since milleniums !
That is solidarity (First People societies).
Societies were small. Low birth rate. Respect of the Environment.
They are ‘’animist’’. i.e. they respect living & non-living ‘’beings’’.
Each individual had duties. He also had a role within the society.
To work, UBI would require a different society for us: different Values (= other Beliefs). Other Priorities. A real collective Purpose.
A “dummy UBI” can survive as long as the country is rich (having ressources, or using poorer countries to produce at low cost, as long as they remain poor).