You can have an economy without capitalism. Capitalism is defined by private property and shareholding. But you could have a modern society based on consented cooperation.
Have everyone who wants help in the fields (more people like that than you think), and if my neighbors think it's useful we'll have a grocery store but without money. We'll just take turns to feed the shelves and clean the floor and worry about the logistics. And if we grew too many potatoes for our local consumption, the people from other neighborhoods may well enjoy them and have some other stuff to send in our direction as well.
Are there any large scale examples of this actually working? It seems like, in practice, there are too many bad actors for it to actually play out like you're describing.
Mind you, capitalism certainly has it's issues, too... but it seems to better limit the negatives than every "share everything utopia" I've read about beyond tight knit groups of friends/family. Every single large scale example of what you describe seems to end in "and then it all burned to the ground", more or less.
Have everyone who wants help in the fields (more people like that than you think), and if my neighbors think it's useful we'll have a grocery store but without money. We'll just take turns to feed the shelves and clean the floor and worry about the logistics. And if we grew too many potatoes for our local consumption, the people from other neighborhoods may well enjoy them and have some other stuff to send in our direction as well.
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