The natural process of development of an organized religion is not that much different from that of any business.
When a business opens as a small shop, the owner runs the business based on simple concepts, with simple rules, changes procedures and course of actions quickly as needed, without much thought, knowing he is accountable to himself. When the company becomes huge, it changes, it now needs standard operating procedures, strict guidelines, decisions affect millions of dollards, and people. Everybody is accountable to the company and the company becomes bigger than any single individual. The company in essense gains a life of its own, especially once the original owner is gone.
The watchtower was the same. Started with Russel as a modest brotherhood, simple standards. Then Rutherford gave it the push to break out of the mold and shaped it as a corporation ruled from the top down. Knorr expanded and sharpened the edges business-wise. With the change to the arrangement of a Governing Body it all changed. The Org is now bigger than any individual. It has a life of it's own. If one individual at the top wants to change it, the others simply kick him out in favour of the standards already in place. The institution and values that have been in place surpass all other considerations, and the people at the top simply make sure they keep the engine going.