There's another problem with basic income: being able to earn an income is a signal of mate quality, and that norm might take a long time to unlearn.

While it's better than letting people starve or get food stamps, you might find a large class of young, unemployed males who have trouble getting interest from potential mates. Historically, that's always been recipe for political unrest.

And even if there's not, if basic income becomes a thing, I'll bet there is large positive status attached to someone demanding your labor. People on basic will be second-class citizens, and there will always be political pressure from the 'working class' to reduce the drain on the tax base.