To a certain extent that happened to Armstrong's lot after he died. Unfortunately for the JWs the WT is not a single weirdo directing it any more. It's a large amorphous monstrosity that has been designed to outlast the death of any individual. Which is totally paradoxical, when you think about it. Millions then living were supposed to be alive under the new system and the current arrangement would be obsolete.
They'll not be voluntarily dispersing any time; the system is too entrenched. If it collapses, it'll be due to external pressure.