Interesting shit.
But it's also possible that when things are at their brightest economically, people feel the most insecure because they know the good times won't last forever. So boom times are when people most need stories about people surviving the bad times.
Analysis isn't quite as hot as I'd like. My gut tells me that during boom times, we can most afford to contemplate loss and hardship, emotionally speaking, and that during crunch times, we want escapism.