Really? You think it's going to fail?
I think it's going to be the only welfare of the future. People will laugh when we tell them that we subsidized some people over others (both at the top and bottom) and that people didn't revolt.
And in fact not only people didn't revolt against that model but they tried to take the biggest amount of advantage on all sides, while pretending that they either loved or despised the State (i.e left vs right).
The other day I discovered Nixon was about to create a UBI but it didn't pass senate.
I think UBI is inevitable and probably the only option developed nation states (and respective elites) will have to avoid some sort of civil war and maintain their bases in the west. I really think things are going to get wild in the next years!