They cost money to open and run. Best case is a group of somewhat wealthy friends pool their money to start a co-op. Idk how lending policies are towards worker co-ops.

I worked in a metal fab shop and ppl talked about unionizing. I brought up a co-op or other employee owned models but they said 1 machine alone can easily be $500,000+ for a shitty used one and none of us could get that kind of money.