the power of self interest.
As it relates to the Mormoneys. An insurance policy is cheaper and would pay more than the Mormon Church in benefits than the 10 percent tax levied on followers. It is also cheaper to go to Disneyland with your own money. But followers would still be required to pay even without benefits. It ain't the benefits that motivates the Mormons, they are coerced. Albeit Mormon Religion use money for business. JW movement is not about that.
You can start your own movement and use the money however you like but the money used in the JW movement is only spent for expanding the movement - converting people to JW. Most people and religions will do anything to survive at any cost but not wt if if it violates a basis of faith -take blood for example. WT existence is based on its faith and that is why they are not going to resort to survival methods contrary to their faith. WT leadership ain't loosing any sleep over financial problems and if they have to close down for financial reasons, they will do it without a worry in the world and operate from a barn or something.