I am still waiting for my old bikes to be worth lots of money..
I wonder if it will ever happen
Hand made frames
Reynolds 531 columbus slx campy groupos 12 speeds.
Who wants that when you can have plastic stuff?
You might be surprised. Several years ago I asked the same question about my 70’s Campy road bike and I received several offers for it for way more than I expected. Old Campy parts go for a good amount on ebay. In my case it helped that the frame was handmade by Tom Ritchey in his garage in Palo Alto but many older bikes have value.
Since overall bikes are very scarce then I think that time is almost now.