8Exactly. The likeliness of some kind of grassroots movement forming is extremely slim because anyone who might try to engineer such a thing is weeded out before even joining. I know of only one attempt at this led by James Penton, which was immediately crushed with his disfellowshipping; and to my knowledge he barely gained a following. Maybe somebody else can add to my knowledge on this, I think it happened in the 80s.
So change has to come from the top. But because of bureaucracy and discipline, only the Governing Body can enact change, but only with a majority vote, so change has to be incremental. We all know what happened to Ray Franz for even entertaining radically unorthodox beliefs. Who on the Governing Body is going to risk their enormous prestige and leisurely lifestyle to give women better treatment, for instance, when even suggesting the idea because of how radical it is could get them demoted or even disfellowshipped?