"49 autocycledeluxe" hit the nail on the head I'd say with the model A restorers/we are a dying breed ( as is the old bicycle market to an extent). Also about ( most) kids not giving a rats butt about history or taking their azz off the couch/putting the cell phone down, or even lifting their heads from the cell phone screen. There is some fresh blood in the hobby, and interest in BMX and unique quality bicycles up to what...the 80's until most were imported, quality and pride long gone.
Sad, but a reality too. I collect vintage toys ( also a shrinking market/especially pre-50's) some oil and gas, soda pop advertising, store props etc., guitars and of course bicycles ( for over 4 decades). I have a couple of collector cars and a vintage motorcycle. I collect what I like ( and can afford) and don't really expect to make money if and when I sell. I used to sell lots of stuff while raising a young family/had to. With parts, it's all relative to supply and demand unless in an auction and it's a bidding war of pride. All I know is I usually collect stuff that is hard to find, expensive to fix, and takes time to complete. That's why I'm crazy.