I am amazed how chronically ill-informed some supposed pilots are about what a TU is and how it works. (I would have said stupid, but that would get me equally stupid responses).
A TU is, and can only be, a collection of its members. If its members want to take some sort of action to improve their t & c, then it takes 1. All of them to be in the TU, and 2. All of them to be committed to taking the action.
In the end, it is all about Power. You have to choose to use it.
No TU and no CC has a magic wand.