I was thinking about it like this: in the apocalyptic vision mentioned above, there's still just as much food being made, and still just as much fancy-pants stuff too, IP and services, except those are being made by robots. So all these displaced workers can be fed, practically speaking, except supposedly all the money goes to owners of robots while the humans are out in the fields and unable to buy beans. They're being punished for being useless.

Well, I don't believe the economy is limited to bland things AI can do on one hand, and paddies and beanfields on the other. I don't believe there's a great mass of useless people who we've been looking after so far through a kind of polite fiction of makework. I'm not saying they'll get rich, and I don't expect them to be brilliant, but I expect them to display low cunning and be less than completely feckless. Sometimes for complex reasons, forces beyond our control trap us in poverty. I don't see why that would be a universal effect that applies to these displaced office workers.