Because capitalism? We already don't keep everyone alive, fed and sheltered. Poverty and inequality are rampant both globally and within countries. It seems far more likely that extremely powerful technologies controlled by the biggest profit-seeking corporations will exacerbate these problems rather than solve them.

There is a strong case to be made for UBI or a more expanded social safety net more generally, but that also requires new revenues. How confident are you that governments will be willing to tax and/or expropriate the economic benefits of AI in order to redistribute it? I'm not saying it won't happen, but that is absolutely not the political-economic trajectory of the past 50 years in most Western countries.