Coop existed in the Caribbean like flowers in the garden during the sixty and all of them failed, even more workers union had their own coop. That is the favorite toy of Richard Wolff, instead of calling himself a Marxist, he should be called an Owenian
Let a hundred flowers bloom, let a hundred schools of thought contend. Mao Zedong
Like Enver Hoxha said that Mao was a confucian poet, but not a marxist thinker
There were many masonic groups, and mutual groups who provided funerals service free, and doctors to their members and they were co-op, and they were not socialists, and they had their own mausoleum, and they also provided the professional hired prayers for the deaths. Some of those groups were originally created by the Essenians and Rosicrucians in Egypt including the orphanages
What is needed is a World Cooperative Commonwealth not lots of small scale coops competing to sell their products on the market with a view to making a surplus aka profit in order to survive.
There were several workers union which had supermarkets called coop to sell products to their members,but they were also making profits, and to compete with others commercial center, later on they became part of the banking system