Resistance to change is part of the human condition and overcoming this resistance is part of changing the way delivery teams work together. A large part of the prevailing certified methods are about tackling this problem in a variety of ways.
How successful these methods are depends on many things and not least the starting conditions and senior leadership support.
Without this kind of safety net creativity is called for and Tony Heap talks here about his experiences with a less head on approach to influencing things.