Jws: I agree with OTWO, I've always thought the JWs have been in decline since they went to the donation plan for literature.
I agree with that too. Actually I think the decline started right after the 1975 failure, but in small ways, such as stopping food service at assemblies and conventions, which used to be provided at no charge. "God feeds his people spiritually and physically," you would hear Witnesses say in those pre-1975 days.
But any decline in money coming in was mostly made up for by, as you [Jws] say, raising the price of the magazines. I remember them being 5 cents each, then after 1975 they went to 10 cents each, then they went to 25 cents each.
But I think the really big financial decline started in the early 1990s when they went to a 'donation arrangement' for the magazines. They did it to avoid paying tax and it didn't work.
Why didn't Watchtower simply follow the Biblical advice to....
[Pay] to him who calls for the tax, the tax, to him who calls for the tribute, the tribute... (Romans 13:7, NWT)
It would have been so easy, but NO, the Geniuses-that-Be (GB) in the organization felt they were above following the Bible, refused to pay a simple tax, and went to a voluntary 'donation arrangement.' They were no doubt thinking Jehovah would 'provide' - How, by neglecting His instructions? So much for the GB's thinking - but he didn't, resulting in the Governing Body shooting the Organization in the foot.
That, plus JWs awakening all over the world (during these Internet Times) and withholding donations, has resulted in the financial disaster that we see today in Watchtower.
I don't have much of a guess as to whether Watchtower's decline will be swift and complete, or slow and partial. I guess I lean toward the latter, but it's out of fear of being overly optimistic. The faster and more complete it is, the better, but I can't help thinking that Watchtower has more up it's sleeve that we don't know about yet.