Well, if we take this to the ultimate, we will end up with a single highly productive robotic AI (why have 2??), albeit with millions of dumb fabrication units and material processing places producing a surfeit of goods that there is no employed person to buy.
This AI will have to pay his production units and have them buy the goods, which will then be made to meet their needs.
In truth, there will indeed be many people for whom there are no jobs at all. They will have to be given money to live on. This has been called a negative income tax by some authors, and welfare by others, but we must face this fact that is a by-product of robotic productivity. Even farms can now be automated into high rise factories, with zero insect pests in the clean, LED lit interior, they have the ability to replace many crops where insects are a problem. Plants can be grown in cities = less transit cost, less spoilage loss, zero insect loss, year round production at a high rate due to added light and CO2.
So some people will make nothing, yet want to be fed and watered all their lives. This has come to pass for many people - welfare in many places is like this. How long can it persist? It has no limit as long as the people and their robots who make stuff are willing to be taxed (yes, that is what I call it, taxing work, as it were). What incentive to move out of this free life?
I propose that the live-free crowd will take place in a weekly lottery. In that lottery one in 10,000 wins the right to fight for his life in the arena, to entertain these others on the dole. If you want to miss the lottery - get a job, or get into school.