While I am confident it is more about money, there sure is a huge consideration that they don't know what to say anymore. As crazy as some of the Fred Franz stuff was, it certainly was baffling enough to dazzle everyone.
But they have no talent for contradicting their old doctrine with something that seems like a "brlghter light" understanding.
I think they have some ideas on the shelf about tying Armageddon to the 120 years thing like the days of Noah and shooting for 2034 as a highly speculative date. I think they have considered how to drop 1914, maybe even going with the 20 years error that so many have tried to teach them about that. But they loaded the Governing Body with a bunch of "Yes" men for Ted Jaracz and his crew that aren't really clever enough to make the changes.
I think that over the last 20 years or so, they have occasionally hinted at such things in meetings and gauged the reactions of members and members didn't like it. They then waited too long, got too much locked into their old beliefs.
They probably thought they should just keep "tweaking" the doctrines and selling literature and didn't have the sense to see the slow death of printing. Really, there may not be much of any way to dig out of their hole. Members have been so hitched to the printing corporation that they won't really contribute more money to a streamlined organization.