a) "Soviet"=an elected governmental council in a Communist country
b) Kibbutz =a communal farm or settlement in Israel, a socialist economic organization based on the principle of state ownership of land

Co-ops are private, economic organizations, not public, political organizations.
Anyone can set up co-op right now - no changes to the political system or laws are necessary.
A community, depending on its size, may have multiple co-ops for a given activity as well as different co-ops for different activities.
"Co-opefy The Economy" would be a value shift for the entire population (not just a community) away from 0.01%-owned Corporations to build economic power for political leverage.