If you wanted to make a lot of money what would you do? First, come up with a product or service that everyone wants. Second, find a way to be the only company that can market the product or service. Third, find a way that you can legally pay no taxes on the money you make.
Scientology, the creation of L. Ron Hubbard, has figured out how to do all three. And it's a very old business plan he put into action.
The product is enlightenment. Who wouldn't want that? Inner peace, right? Joy? No fear of death? Scientologists call enlightenment "clear."