Depends on who controls the machines and what they do. If the machines just serve a select few and the masses are left to fend for themselves, they can just make a secondary pre-AI-like economy where they do small scale medieval-like economic activity for each other. Because if you're poor and can buy no AI services but still need some shoes, your other underclass neighbor may specialize and make some handmade shoes out of some plants or whatnot, for which you give him some seashells you got from another guy for cooking a pot of peas. However the machines may come in and intervene and stop this kind of shadow economy and force you to... I don't know. To just sit in your pod, or die. Because I guess they won't allow you to plow a field and stuff, because that land is now owned by AI or AI-owners too.

There are too many uncertainties around who will be in control and with what kinds of aims.

It would end in some kind of prison or zoo.

This only makes sense if you assume that the value of humans to other humans is solely their economic output.

Which is certainly how our society is structured, but, does it have to be? Can we admit that we basically have a developmental trauma as a species and learn to live the sake of living, instead of for the sake of being "useful"?