Oh I don’t necessarily mean that co-ops are competitive at all with traditional ownership structures at all. Part of that is likely due to taxes and general financial forces (co-ops tend to need to be low-debt, privately held, etc.) and part of that is related to them being rare and largely concentrated in hyper liberal cities like Portland or SF or Seattle.
I just mean that they technically operate in markets but are not synonymous with the traditional notions of Marxian capitalism.