we're not going to pay him because he didn't farm it. we're going to pat the robot on the head. we're going to do R&D and implement the technologies that actually work for the people not the few.
if money is not existent at this point, i will, as mentioned in my original comment, exchange it for something else, be it other goods, or my services as a mechanic, electrician, metal worker, or IT-support (yes i know, kind of an outlier)
No complex society has ever been run without money. While that's no proof, that is impossible, I don't care to be part of this particular social experiment.