The worker-owned cooperative would be privately held.
This is a viable, even superior, model from both a union and social perspective.
You don't need a union when the workers are the owners.
en.wikipedia.org
That's the best example. Management salaries far below all peers. All kinds of industries successfully penetrated, from finance to manufacturing, with this model and a stable, successful, 10B+ revenue set of worker cooperatives (almost 100k workers) make it happen.
This should be encouraged. Screw Wall Street. Lefties shoudl love it for how good it is for workers. Righties should love it because these co-ops keep people off the government dole.