I don't think they can maintain their numbers with the easy access of information on the net. Retrieval of their own history, their foolish medical views early on, and their back and forth position on many subjects is quite damning. One does not have to read an anti-Witness book to become disillusioned. All one has to do is read their own literature, which is readily available now.
I also think that besides their vulnerablility from the outside, they are decaying from within. Until I came here 4 months ago, I had no idea, how severe the problems of child and spousal abuse were. Not until I read the thread "Unright Behavior vs the World" did I realize the depth of corruption in at least some of the congregations. The bad treatment of the Elders, I knew, but the severity and impact of it really hit hard when I read the thread "Panties or thongs"
I think the Organization is in even deeper trouble than I did when I started this thread just a little while back.