"ut then what would keep workers together, when they are free to wander off and on"

https://theanarchistlibrary.org/library/peter-gelderloos-anarchy-works

markets have existed under socialism, but when given the choice workers almost always choose to forgo them. What would keep the workers together? There want to be together, humans are social and enjoy helping each other. You can see that in every country the gov collapses in anarchist communism is the outcome. (well except for like 3 mutualist ones, but nobody cares about those)