Wishfully thinking here... I do believe what you say, but I wish there was a way to show JWs the evidence that this is what goes on.
I agree with OnTheWayOut as far as cramming people into assemblies. However, in some areas it may be the contrary. I think that being the business people that they are, they know where they need to do that. In our circuit, we actually just got divided further and our assemblies are now smaller. This just happened in 2015. I think the reason for that is the opposite to what you are saying, while the goal is the same. Less people means more assemblies. More assemblies mean more money. If they fielded it and think they can actually squeeze more money out of the brothers, then they will divide.