Have you ever followed electoral reform debates? There is a distinct pattern, people out of power want change, people in power do not. They are happy with the status quo. Only the people in power have the power to enact change. So change tends not to happen.

That is changes to the goal system rarely happen, especially if they might disadvantage the incumbents.

I have ideas that I'm going to try out. However they are more to do with acquiring feedback from other people outside of the organisation, which would foster goal stability iff the feedback from outside the system does. I.e. if the feedback came from donors, that consistently wanted a charity to do one thing, it would keep the charity on track.