@pluralistic Cory, these are really great data points. There is an antecedent: municipal socialism in the 19th century in parts of Europe, including my native Emilia Romagna, in Italy. There it was not (always) coops, but City Halls building up substantial investments, including utilities (energy, water, waste...) and transit. Eventually some of those companies federated to serve millions of people.
Something for your Green New Deal world?