The JW organisation is a responsive, reactive one. It evolves according to its' surroundings.
When 'prophecies' fail, they respond with new light.
When world conditions change, for the good or bad, they react with WT articles explaining how this fits with Bible chronology.
When all else fails, a few misquoted scientists and professors seem to keep the sheep placated.
The internet will be the death of the WT though. Once the older ones have died off the younger ones will intuitively research online and be horrified at the huge dishonesty of this organisation. Even Africa is getting online. The funds will dry up and they will be spending more than they are earning.
If you think JW's are niche now, their dwindling retention rate will see them fade into obscurity.
Splash