In the land/labor/capital triad, the only thing that will be post-scarcity due to AI will be labor. Anyone who lacks one of the others will be screwed since the only they have to trade - their labor - will be worthless.
But this requires initial capital to get going, and that capital (and land) is what gets traded. At some point, when capital is no longer required, then it would become worthless, but by then i think humanity would've reached star trek level of post-scarcity (or killed themselves with a war).
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