The Men at Bethel that run the Watchtower Society do seek to control. However, most rank and file Jehovah's Witness do not realize that they are part of a high control group, that uses tried and tested techniques to control them. As the group of sincere bible students under Pastor Russell has grown into an international organization, controlling the members and keeping them in step has become a priority.
The requirements for membership are the same as all other high control groups or cults. The leadership demand unquestioning obedience and faith in the organization. All pronouncements from their leaders are unique and truthful. Any member that disagrees or questions is to be warned, watched and then if not repentant, disassociated and shunned.
The average Jehovah's Witness is motivated by fear of losing something they have come to value.