Imagine you meet with some peers. The purpose of the meeting is to decide on changes that will impact many. You keep the meeting secret, and secret are also the follow up conversations that aim at defining the details. You go about it for a while, and then you and your peers go public with a big reveal. Now that the change is public, you go back minding your own business, expecting that everyone else will adapt and adjust accordingly.

I wonder how it would end.

I also wonder how common this situation is in organisations all over the world.

Your effort to promote change is failing because you want change imposed rather than concerted.