The project manager receives yet another suggestion from their boss to add to the project's scope. Earlier requests were easy to address. They cost little in time, effort or money so the project manager simply addressed it within the team by calling in favors and working a few extra hours. This latest request from the boss is substantial. It comes as a result of seeing the great results your team has produced so far. This new suggestion has potential for great competitive advantage, but is well outside the scope of the existing project. The project manager to-date has simply absorbed any additions to scope.
What should the project manager do now? Will this project ever end? Are the project team members being punished for their good work?
A reference would be nice for further study.