1) It actually is possible because it's often only a couple of people and they tend to make themselves known and you can approach them.

2) The whole point of self-organisation is that the people organizing do so under their own terms. If someone puts down rules of engagement and demands they follow them, then they have a boss.

3) Wake me up, when you aren't doing your best teamwork at conferences, or at an island retreat, both of which almost none of us can attend.