I think this may end up eventually becoming a possibility as it becomes more and more impossible to truly "pull oneself up by the bootstraps" and in addition I notice that despair over that reality is starting to creep in to even the people who need/want to believe in it most fervently.
I think however, it's best combined with single payer health care. Because until that has gotten under control, I'm not sure lifting up everyone to a basic standard of guaranteed income would help those that it really needs to help--they tend to be the most sick, disabled, ect who accrue a huge amount of expense because they cannot afford to get care until it's truly catastrophic.
But i do think things will have to get significantly worse. I think we're headed down that path (of things getting worse). It makes me sick, frankly, but I'm doing what I can to at least hopefully support people who can be ready to get us to UBI/UHC when we're ready for it. Or even before. I'd love to not be right.
Most of my extended family is of the folks who really need and want to believe that "anyone can make it rich," and "everyone who needs any kind of government assistance or programs, including public school, publically funded highways, anything where my money doesn't always go 100 percent back into helping me personally--is a total scum-sucking loser who should be drug tested...oh, except for me when I've had to go on assistance/the coal industry consolidated/local economy collapsed/I got cancer without insurance so went on medicaid/I went into the military as a career so have never had to pay a dime for health insurance/care or much in the way of housing until I retired) But frankly, even some of them are having oh shit moments.
Right now they're blaming it on brown and black people and muslims, but even some of that is starting to fade.