Congratulations, you missed any notion of nuance and scale in my original comment. A community is indeed much larger than a single commune, in much the same way a village is bigger than a farm.

If a given commune's members move to another commune, nothing is truly lost. The original commune is down to the two who hate eachother, or one will screw up enough to get forced out before that happens, so what? Eventually, new members will show, or nearby communes will take on the work and any resources no longer being utilized.

Meanwhile, you're insisting the whole setup requires twenty or so people, hell-bent on being insular and self-sustaining(near impossibilities for long-term survival in Western countries - the Feds will come calling), all under the same roof. These are ALL notions I rejected in my initial comment. A commune, and/or a community composed of communes and individuals/infrastructure hosting multiple communes, is more than a glorified polycule or a cult.

Don't look to me to defend the effigy you've decided to burn in your head. If you read my other comments, I've made clear that my own preference is to avoid en-meshing myself in any potentially dysfunctional, singular commune.

If we're going to extremes, I prefer the Beduins or Travellers to the setups you're concerned with "disproving" or whatever. Even though I called it a lazy example on my part, there's good reason I mentioned the Amish originally, and not the Branch Davidians or all the FLDS drama you can watch on TV. If you're so concerned about Jonestown, stop pretending that's the only setup out there, or that glorified polygamy with religious overtones is what people want from a commune.