@Commune
Writing a book or making a chair is very different from the hundreds of menial labour tasks required to build, say, a car; from mining dangerous toxic chemicals to refining them to smelting to spending hours and hours building a small component that needs to fit precisely with another component, to speak nothing of the tools required to do so that needed the same process, plus specialized, regular, menial maintenance. All processes that need to be very exact and under strict specifications for quality (nevermind speed).
And “it’s a small tribe” matters a whole lot. Just look at any local newspaper; articles about someone in the paper’s city dying in a car accident are first page, articles about 4 people dying in a bus accident two towns over are 3rd page news, articles about a 100 people dying in a market bomb on the other side of the planet get a small paragraph on page 6. People care about those that are near and those that are similar. People will sacrifice their time and valuables for people they can relate to. You hear of an orphanage in town that needs foods, you donate some cans of food; you hear of thousand of children dying every day in Africa, you make a sad emoji on twitter, at most.
You’re going to get the same in your system; people will work hard for the benefit of their friends, family, those they work with every day, but they won’t for people they’ve never met. And that’s best case scenario; you’ll always have people that go “it’ll be a long time before my poor/no work affects me, if ever, chances are someone else will pick up the slack/it’s future me’s problem”.
When the part they’re working on goes to another town, they won’t feel the need to work as hard. When the food they’re growing is split up, they’ll keep the best for themselves and the chaff to give out. And if you want to avoid even those fairly benign practices, you need supervisors, managers, controllers, autocrats, The Man. Goodbye utopia.
True communism had its time, and it’s passed without it barely put in practice. The only way for it to work again is by racing towards the technological singularity and near full automation, and sadly we’re fairly far from that.