small teams generally self-organise under a single leader, eg sports teams and it is often the other members of the team who self-check as they have to take up the load for anyone who does not perform.

Uunfortunately, few.projects.exist where.these pods can remain isolated.

The above definitely exists all over. The group usually hires based on personality. Generally these organizations are very centered and know what qualities they are looking for in a a team mate.