When "everything becomes easy and self organized", it's generally because there is an implicit leader that makes it so. You may not see the leader, as he or she may have no title or recognition. But it's the person that people go to when they have problems, it's the person people turn their head to during disagreements in meetings, it's the person that will go from party to party to discuss "off-the-record" and do the real negotiations, it's the person that show example, encourage efforts and discourage disruption.

You just think it's self organized because a good leader makes you feel you are part of a whole, not that you are working under someone.

I've yet to see a group a human, working together over time, that doesn't see one leader emerge from the group. We can't help it.

I've went to NGO stating they were a flat org, hippie events where they promote the team spirit, eco-villages with community driven systems. They all have unacknowledged leaders.