Part of me believes that in 15+ years or so, a lot of the baby boomers (who make up the bulk of this hobby, I'd think) will start to really show their age. The bubble will continue to grow as more retire and have more spending money and time. Down the road, as time inevitably passes, they will become too old to sustain their role in the hobby. Maybe their collections will be passed down to their kids or grandchildren, who want nothing to do with it, or who might embrace it, maybe they'll just sell the collection off so that someone else can enjoy it, or maybe it'll be sold off in an estate sale. Who knows. That's when the bubble will pop, I believe.

Sorry for sounding so depressing and morbid, but kids my age hardly show interest in pinball anymore. It's all about the latest PlayStation or Xbox and how arguing over how many frames per second their game of Call of Duty will get using Ultra 4K settings on their latest PC gaming rig.