It will be interesting to see how the WTS weathers the current economic crisis.
Other earth-shattering events (wars, terrorist attacks, natural disasters) seem to drive people to them, at least temporarily. These things are often apparently interpreted as "Is this a sign that Armageddon is nigh? I'd better get back to the Kingdom Hall!" by people who are still well-programmed by their WTS background. The irregulars come back in full force, and the "Kingdom" message works on people scared by sudden, dramatic changes.
But this economic crisis is different. It's unfolding slowly and deeply, and is not part of "the sign" as found at Matthew 24, Mark 13, & Luke 21. People who have been staying away from the KH are not likely to go back - how is a meeting going to help put food on your table? And, the "weaker" ones will be more inclined to stay away as well - it costs money to drive to the KH, go out in service, buy clothes for meetings, etc.