We are not born the way we are,we learn it. If we have learned to compete, we can also learn to cooperate. If we have learned to treat each other in a discriminating manner, we can also learn to treat each other in an egalitarian manner. If we learned to be aggressive, we can also learn to solve problems in non-violent ways. Behaviorism is an optimistic not a pessimistic philosophy.
People can change.
Consequently, if we want cooperation we need to design an environment that promotes or reinforces cooperative rather than competitive behaviors. A Walden Two community, like Los Horcones, is precisely about designing such an environment. Thus, if an intentional community is effectively designed to shape and maintain communitarian behavior, then it will endure. We do not learn without a reason. The reasons for our behavior are in the environment in which we live, not inside our brain, mind or heart.