How does someone get rid of human competitiveness?
Social anarchism and communalism sound nice on paper or within a very small social unit like an extended family. But it doesn't really work when there's a large population with a high degree of anonymity.
If there's no regulation from a "state-like" institution then how do you stop people from thinking, "Yea, but if I screw this person over who has no connection to me or my family, then I can benefit myself and my family".
Even if you manage to create such a perfect, utopian-style economic system, it just takes one person to have that thought and act on it and then you slowly make your way down the road to state-sponsored capitalism.
The way I see it, this is essentially the evolution of economy. We started out with small family units or tribes that were all communal. As cities developed, anonymity increased but people continued to only look out for their family unit or tribe rather than the collective whole because the collective whole was too large for a human being to fully fathom or actively care about. So you started getting people competing inter-tribe within close confines for resources, bartering-ability (aka money) and land. Communalism died and capitalism followed all because someone thought "Hey, but what if I just screw this guy over anonymously so that I can get ahead?"
I'm not sure if trying to go back to some form of communalism would really work especially in our highly resource-scarce, globalized world.
Also, there was a question evaded earlier: who would build roads?
I have a few thoughts about this.
One is that any position - left libertarian, right libertarian, authoritarian - all of these have different extremes. Most people tend towards being moderate. Lots of people might have an underlying philosophy that tends towards libertarianism but also see the need for cooperation at a higher, formal level for particular purposes.
Personally I consider myself a distributist. On political tests I tend to show up as a moderate left libertarian, but I don't see myself as really being right or left, and I am probably more authoritarian than it seems. None the less, I think it is important that responsibilities always be devolved to the lowest appropriate level.
THat doesn't mean that I believe in utter individualism though, or tribalism. There are some issues - air pollution comes to mind - which are essentially global, and there needs to be some mechanism to deal with it on that level. That probably means some kind of governance. And there would need to be governance for other issues as well.
I am not sure that human competitiveness is such a problem. There have been times when the economic systems did not rely to the same degree on it. Not that it didn't exist, but it was seen as something to be careful about, and not the bringer of truth and a moral force.
As far as roads, there are all kinds of ways to deal with that - it could potentially be pretty local as it was in the past.
I think your point about anonymity is important. There is a reason people who favour this viewpoint tend to really push local living in human scale communities, and that is because interpersonal relationships are key. I think that if we can't live well with the people around us, we certainly can't live well in a global culture. Living at the level of neighbourhood or village as much as possible makes for happier people, and it is also far more environmentally sustainable. Unfortunately few people really appreciate the importance of local politics.
I don't think communalism died just for the reasons you suggest though. I think there was a conscious decision to move in that direction, and to erect economic structures and regulations that favour that. People always want to imply that the type of economy we have is based on a free market, but it isn't - there are all kinds of artificial structures that favour and encourage certain elements. I heard someone suggest recently that if corporations want to be able to act as persons under the law, they should also have the same responsibilities and limits as persons - so if they get convicted of a crime, they should "go to jail" and have to shut down for a period. Which would be totally impractical in many ways, but it goes to point out what an artificiality the whole thing is.