A sudden & complete collapse, as described above, would create a void, a vacuum. There would be a rush to fill it.
JW sheep, conditioned by decades of blind obedience, would desperately throw themselves at anything promising a hint of stability which would allow them to cling to their desperately held beliefs.
Former COs, DOs, elders, etc., addicted to the pseudo-prestige and power of their former lives would form local organizations promising "even without Brooklyn, we will still worship Jehovah!!!"
Abuses wrought by these megalomaniacs would dwarf anything caused by the current WTS.
I.e., instead of one united abusive cult, you'd get hundreds or thousands of far more dangerous & damaging groups.
IMHO, better to stick with the devil you know.