> AI companies achieve their stated goals

If those goals are fully eliminating need for human labor, then I agree it probably won't be good for most people. But that will probably take at least decades.

Anything short of that, and I think economy will be pretty similar to what it is now. You still need working class and need it to be productive, so you do need them to be reasonably happy, housed, healthy, and you need good infrastructure. With lower cost for all this, why wouldn't things improve, like all times throughout history?