Nobody on this forum knows the actual total financial situation of WTS. We do know that they have assets in the USA easily totaling more than a billion dollars, primarily in properties around the country. I hope they really are so strapped for cash that this would cripple them somewhat. But I cannot imagine how that would be. One round of yearly district conventions should easily get them to guilt everybody into dropping enough cash into the box. In the USA alone, it woud be $17 per publisher extra. That's a bunch of money for a family of 6 publishers with one window-washer salary between them, but they could guilt the elders into picking up some slack. They certainly could read a deficit for each and every assembly so the members feel the need to drop even more on the way out the door. Maybe they could even just put out flyers (tracts) at the 2013 conventions and skip the cost of some new literature.
As far as poor nations producing a negative cashflow, with other nations like the USA picking up the slack, I call bullshit. Sure, they want us to believe that. There might even be the occasional island nation that doesn't have a positive cashflow to WTS for what it gets. But they must be few and far between.
When a televangelist raises money to go to Africa, he uses a wee bit of his surplus money to get there with sound equipment and lumber and he pays to build his stage. But then he asks Africans to put money in the coffers. At worst, he breaks even on what he spends and keeps the surplus raised back in the states. At best, he gains money. WTS is on a different plan, but with similar results. At worst, they raise enough funds in their poor countries to break even with their efforts in those same countries. At best, they gain properties and have a slight surplus.
A business can only sustain a loss for so long. WTS is a giant business, not a charitable organization.