Earlier quoted context omitted.
It seems that all the forms of collective control you listed are perfectly legal. If the majority of workers prefer workplaces like that then those places will thrive. What you are implying though, is that the government forces all workplaces to conform to your desired control scheme. So fuller democracy equals government limiting choice, as long as it is your desired choice.
That's a bit like saying "Here we are in 1650 under an absolute monarchy. The people are the majority, they could topple our illegitimate hereditary government and make it a democracy, but they haven't done it yet because they certainly prefer things this way".
Why cooperatives do poorly? Maybe people usually are not very good at governance, that's understandable, you can have trade-offs - slightly worse pay for better working conditions, or better dignity. Does it work like this?