I've been thinking about this for awhile now.
We all know that everytime something bad happens in the world the dubs go "end time" crazy.
We all know that everytime something good happens in the world the dubs go "end time" crazy.
This law in England about door to door salesmen (whether it works out or not) may or may not affect the dubs. If it does they will see this as a direct attack and be sure that the end is near. If it doesn't it will be seen as Jehovah's hand in the matter and the end is surely coming.
So here is my point:
The dubs are spritually low right now. They're growth and other statistics show this to be true. The only thing that gets them activated is one of these world events that stir them up like a hornets nest of activity waiting for the end. Then when it is all over they go back to being complacent.
The benefit to the society is that everytime a world event occurs (good or bad) they get increased activity from their membership. The bad side, for the society, is how long can an individual go from complacency to frenzied activity before their frenzied activity isn't all that frenzied? How many times can you get all excited that the end is near only to calm down again and wait a year or more or less for the next big indicator?
This seems to me to be a con for the WTS. Dubs in their 30s-50s are wore out due to this cycle of emotions. After a time, different for each dub, their frenzied activity really isn't all that frenzied. I believe this is one of the main causes of the slowdown in the industrialized nations. Along with the internet being there for them when the venture out from their hole and look for information.