Thanks for a most insightful post. You ask some very good questions and I believe you have identified a very real factor in the stagnancy of developed lands.
Add to that this question that I have pondered at length: How many "faithful" brothers and sisters are now aware of at least some of the damaging information on the internet? Maybe it's the blood issue? The UN matter? The general shakiness of certain doctrine/dogma? Most, likely, would be too afraid to even bring such matters up in conversation with fellow Witnesses. Thus, at some level, they suffer in silence. Yet, for a variety of reasons, they may elect to stay with the organization. But the question is: "Is their whole heart, or whole soul in it any more?" What is even more fascinating to me is that I am convinced there is a subset that still loves Jehovah and his Son Jesus with their whole heart and whole soul (Mt 22:37; Mr 12:30-33), but is not so convinced about the organization. This subset holds that the group known as Jehovah's Witnesses is still, overall, the group that still best represents what they believe, but that they are no longer simply blindly going along with every last directive handed down from Brooklyn.