[t-3]

Do you have any evidence to back up that claim? I've never heard of any study that showed that cooperatives are less productive than hierarchies.

[zozbot234]

Even co-ops have hierarchy-style management, which is often professional management. It's just done on behalf of the collective membership instead of answering to a corporate board. (But the oversight is often weak in any such scenario, so the professionals involved can accrue significant benefits.)