An effective union gives workers a greater share of the company's profits, at least keeping their compensation in line with their productivity. So while the workers may not own the company technically, they are being compensated more like an owner.That is not the same thing. Again, it is a fairytale. Are there oligarchs in these functional equivalents that you speak of?
Please name these functional equivalents.
If one takes a pendulum or cyclical view of history, one sees that oligarchs come and oligarchs go.