er, since when did the concept of exchange become the sole domain of capitalism? complex and effective economies have, in the past, been run in a syndicalist framework with exchange being done using everything from labour hour chits to consumption co-op credits to even good old fashioned fiat cash. i would reference you to economy of barcelona/andulasia during the civil war, the mondragon 'experience' in spain and, to a lesser degree, the 'fabrica sin patrones' and 'recovered factory' movement in argentina.