In the past few years, I’ve been aware of two different organizations that have been greatly impaired by failures of a single person. In the first case, a trusted leader failed to properly do their job and accomplish their responsibilities and the organization nearly sank as a result. I don’t know what that person was thinking. In the second case, one arrogant leader who thought he knew everything and didn’t need any advice from anyone else made poor decisions, spoke authoritatively of things he knew little about and left key resources to neglect.
Great processes and lots of good people, can be overwhelmed by a single bad leader in the wrong place.