I think prices will decline just like so many other items from the recent past (bicycles, soda machines, etc.). Every time I go to car shows and swap meets I am by far the youngest person there (44) and by kids are the only ones there. The younger crowd is not exposed to these items and don't have any interest, especially with the prices so high they can't afford it even if they were interested. This pushes them even further away.
I don't collect to speculate, I only buy what really interests me and at the right price - which not much of anything lately with the prices being too high. I don't plan to sell, but you always need an exit plan just in case. I just don't see the prices staying or going higher within 5 years.
As for the pickers show, I think it has not been good for the hobby as a whole as it has driven the prices up too high to allow entry level people in that have an interest, but not a lot of cash to buy beat up, overpriced stuff.
