More sustainable than a $15 minimum wage.
Employers can pay what they can afford because people already have a basic income safety net - a floor through which they can’t fall.
If they want make more, they certainly can. If they get laid off or displaced, one of the great stresses on family life is taken care of.
We could replace our welfare program with a basic universal income program and come out ahead.
I think it would move us in the right direction.