No.729
It seems to largely exist to skirt labor regulations, save money on equipment and maintenance, and avoid existing unions. Operating factories, farms, etc. this way would probably not be sustainable, but I can see how, like, a nationalized taxi-esque service could potentially take influence from the model, with a smaller portion of the profit taken for public funds through the service rather than by larger portion taken by a private employer. I still don't know if that's a good idea; a socialist economy with adequate programs would probably prefer to build a lot of mass transit, since that's more efficient than operating individual transportation services.