I would say that it is due to market saturation and buyer fatigue. Also, there is a growing sense of complacency among the "panic ninnies", from what I can gather from my limited interaction with some of them (co-workers, casual friends, etc.). I think Dave was on the right track, also, with his financial assessment statement in his post above.
I guess if I start to run low on candles, jewelry and jerky, I might have to hit up the next one
ETA: Although there is growing complacency, they are still searching for, and grousing about, the dearth of reliable sources of .22lr, like so many of the rest of us.