It does work though?
For example Duralex, a famous French glass tableware/kitchenware manufacturer, started transitioning to a worker cooperative in July of this year. This is a company that has like 25 million euros in revenue per year (2023), so I don’t think we can consider it “small”.
This was approved by the Commercial Court of Orléans fyi and I don’t think they’d have done that if it “can’t work in the real world”.