Cults are run by the leaders and for the leaders, they are the beneficiaries not the drones who do the work and devote their lives to their master's dream. The leaders control the discourse and they manipulate the minds of the workforce. No disagreement with doctrine is possible so the drones keep their heads down and feel in solidarity with their comrades.
The scene has changed however and it is no longer possible to kid the eight and a half million people that Armageddon is perpetually just round the corner. Today the internet and people like us have a customer record of what the downsides of the religion are, shunning, waste of time, waste of life, low self esteem etc.
Now the GB are in deep doo doo, big drop in income, big rise in expenditure and few new members to pay for anything. There is no expansion only contraction, selling off the infrastructure for maintaining normal running expenses. This will suffocate any business.
The GB will have to rationalise their lack of progress and failures. They most reluctantly and grudgingly did so about five years after the 1975 fiasco and effectively said in the Watchtower; stop complaining, we still have our friends don't we? --pathetic. They could do the same with the idea that although the paradise will come we just gotta keep at it; more drudgery, more obedience, less hope. And they, the GB, with less money and diminishing likelihood of success have got to work increasingly harder keep the drones on board.
I don't think they will ultimately have success, they may push the spiritual paradise to the hilt but it won't convince everyone. Their days of glory are gone forever.