I think this is quite an obvious thing to say. At the same time, it is quite common to forget what this fact means. What does it mean that this team that provides a service, or builds a product or works on a project, what does it mean that it is made of people? And to the extent of that, what does it mean that the users or the stakeholders are also people?
One of the many wonderful game techniques I found out about in Yu-Kai Chou’s Actionable Gamification is about Mentorship (Game Technique #61).