Another important way to maintain their strength is kicking out dissenters or people earnestly questioning their doctrines. ( disfellowshipping )
Your not going to keep your acquired power for very long unless you have mechanisms in place to hold on to it.
No one every said that religion has to be honest and truthful in its operations as its being presented to the public.
The Corporations like the WTS. can be corrupt if its a religious one.