Where's your proof that ¨all co-ops become managementised?¨

You have none. You pulled that ¨fact¨ out of your ass, stated it as reality, and hoped no one would notice you were bullshitting.

Is it harder to start and run a co-op than a corporation? Undoubtedly. Co-ops are unserious and don't follow the proper capitalist respect for class hierarchy, so banks and VCs are inherently biased against them.

But that's a damning and flameworthy indictment of the uselessness of banking, not of co-ops as a viable business model.