I like systems that withstood some test of time and adversary winds. Titoist Yugoslavia didn't.

OK, so you like the concept of worker self-management. At the same time, you admire the economic power of the US and China. Neither seems to be based on worker self-management.

Worker cooperatives are legal in most of the world, but regardless of local specifics, they seem to have trouble crossing a certain productivity level. The largest one is located in Basque country, where a local feeling of nationalism and somewhat of a siege mentality re larger nations (France, Spain) might have fueled its size. In general, cooperatives have trouble holding on to their best talent, because it can get better wages elsewhere.

If worker cooperatives were a globally competitive institution, we would see a lot more of them.