Deliverable?
Whilst all the comments to this very interesting thread are of high value, important and thought provoking, maybe it simply comes down to the follow on question along the lines of is there a will at the top, and, if so, is the will deliverable?
If the will is there, there may be realistic and pragmatic constraint such that it proves to be undeliverable? If the will is not there....you have a role to play yourself perhaps through the Chain of Command or externally such that the will becomes the reality?