Therefore what?
“Why not Universal Income?”
Problem is...
How do we motivate the 10%-15% of American super-producers to pay for it?
At some point after 40% in income taxes, a lot of those guys won't bother to get out of bed in the morning.
Massive increases in productivity are the only solution, which is a double edge sword, because that will often destroy more well paid union jobs (e.g. truck and delivery drivers) than it creates new wealth.