UBI fundamentally will not work. It's a snake that eats its own tail.
>Automation allows reduced labor costs and increase of supply to meet demand
>Cost of goods takes limited currency from population and is transferred to corporation
>Higher taxes on Corporations to support UBI
>Redistributed back to the population
>Finite currency pool causes decrease in demand of goods and services, money is spent on commodities only to meet basic needs of the individual and family unit.
>Cost of goods/services is lowered to normalize, quality of goods drop, profit margins narrow.
>High corporate taxes mean less corporate profits
>Corporation can no longer manage cost to produce low-quality goods/services and is dissolved
>Less money for government to tax, UBI payout becomes smaller
>More corporations dissolve as costs are higher than income.
And that is if the companies operate only within one country. Corporations can simply move to a non UBI state and not sell or operate within the UBI state. UBI state crumbles as there is no tax revenue, the UBI state can no longer meet its most basic function.
Automation can meet the basic requirements for both manufacturing and service-based jobs, so no industry is safe. Automation must only be allowed when a job is simply too dangerous for a human.
The only option is to move to a moneyless fascist state a la The Federation from Star Trek, or revert back to feudalism where the people produce their own food in exchange for land and protection, and the current capitalist economy, as well as the democratic state is dissolved.