The saying "If it ain't broke, don't fix it" or "if it's working, don't screw with it" is indicative that it ain't working. They're changing because they have to. The prophesies and saintly structures they've built have come back to haunt them. I think somebody in there (the GB) knows they need to move in another direction.
I don't see the organization being strapped for cash. What I do see is that they realize that their contribution base has been notably reduced. They still have loads of money. They're getting leaner and meaner financially by divesting of property they no longer utilize. In a way, it is like any other business.
As I recall, even before the GB came into existence in the early 70s, some of the individuals who were the signatories and the legal representatives of the different corporations and organizations of the Jehovah's Witnesses (the International Bible Students Association, the Watchtower Bible and Tract Society of Pennsylvania; the Watchtower Bible and Tract Society of New York, Inc; Religious Order of Jehovah's Witnesses, New York; Kingdom Support Services, Inc., New York) included and/or now include individuals who were not of the anointed. My perception is that some of those people were chosen because they either had some business experience or had credentials that made them suitable to be signatories or legal representatives. I don't think that meant that the visible heads (either the presidents at one time nor the GB now) ever lost ultimate control. So, I don't think there's anyone behind the GB pulling strings.
But perhaps now, with the move to the GB as the FDS there may be a greater degree of control, even if they still use non-anointed or R&F individuals to represent them. For the Mormons, it's simple. You essentially become an "anointed" when you reach the higher echelon of "priesthood". Reaching the top layer or the highest order of their priesthood , the Melchizedek order, where I suspect the major shots are called from, is what I imagine would equate with the GB of JWs. It just seems that that kind of level is more attainable in the Mormon Church because to some degree the requirements can be identified. The GB selection is much more mysterious. The change is afoot. I think they see it. I think they're working on it.