Michael, I find your post very interesting; while the ages are true, I disagree about how that affects the market. The older a person gets, the less active he becomes; few live concerts, no trips to the museum or a host of other trips that were made with glee (my cameras are just gathering dust); Consequently, "high end audio" is the biggest enjoyment for an aging audiophile.
Evidently, you and many others have no problem in affording this expensive hobby, and don't realize that has become a problem for an "abnormal" number of people.
Once a person reaps the benefit of a perfect holographic soundstage, he's hooked for the rest of his life. (you gave the reason I didn't engage in that soundstage thread; it took me years to get the one I have)
This is what you stated; "Used speaker market above 6k? I would imagine there are stock piles upon stock piles. I would even imagine it won't be long before you can't give them away."
If that is true, it's because the economic situation of the masses has changed more than we are led to believe, not because there is no market for those speakers. If the economic situation of all the older audiophiles on a fixed income changed, those speakers would be swept up in an instant.