I think the originators of the Watchtower like C.T.Russell was just a power playing opportunist using his public persona as a Revered to push
his own inquired ideologies and did in fact utilized his profession as a salesman in promotion of his magazines with the company " Tower Publishing "
A good plausible guess would be most of his biblical ideologies were contrived with the idea of pushing the sales of the literature, some might argue the point that
he really did have an honest belief, but I kind of think once a salesman always a salesman. In any case his lawyer Rutherford saw the potential power of the organization
so when Russell died he grabbed it with zeal including the incoming money that it was making and there you have the JWS, the printing machines haven't stopped since.
A publishing empire disguised as a religion !