-- In such a future, people will have minimal income (possibly some UBI) and therefore there will be few who can afford the products and services generated by AI
-- Therefore the AI generates greatly reduced wealth
-- Therefore there’s greatly reduced wealth to pay for the AI
-- …rendering such a future impossible
-- In such a future, people will have minimal income (possibly some UBI) and therefore there will be few who can afford the products and services generated by AI
-- Corporate profits drop (or growth slows) and there is demand from the powers that be to increase taxation in order to increase the UBI.
-- People can afford the products and services.
Unfortunately, with no jobs the products and services could become exclusively entertainment-related.
UBI can't fix it because a) it won't be enough to drive our whole economy, and b) it amounts to businesses paying customers to buy their products, which makes no sense.
You got this backwards - there won’t be need for humans outside of the elite class. 0.1% or 0.01% of mankind will control all the resources. They will also control robots with guns.
Less than 100 years ago we had a guy who convinced a small group of Germans to seize power and try to exterminate or enslave vast majority of humans on Earth - just because he felt they were inferior. Imagine if he had superhuman AI at his disposal.
In the next 50 years we will have different factions within elites fighting for power, without any regard for wellbeing of lower class, who will probably be contained in fully automated ghettos. It could get really dark really fast.