It's really a good question,one that I don't want to ponder too much because I see it everyday when I go downstairs.But not everyone gets to see model trains.And that's part of the problem with the hobby is the exposure.
You go to retail stores and all you see is video games and anything related to them.Where are the trains ?
Sure during Christmas , really before around Thanksgiving you will see some at the major retailers and such,but no other time.
If the manufacturers would just put the little extra effort into more shelf and display time I think it would gain the interest of more people with the " New, neat, techno trains " that we have on the market today.Sounds like a video game ad almost doesn't it
We will see a decline in the hobby if us the consumer and them the manufactures of the trains let it happen.We have to share and show ,they have to display and sale.
I go to train shows/sales around Thanksgiving time to Christmas,and see all kinds of young children and young adults who seem fascinated by our beloved hobby but that fascination runs out when they leave,and why ? Because the exposure ends there !
And where are the commercials ? I'd love to see a commercial from Lionel showing their Legacy System.Could you imagine during Saturday morning children's programming a train commercial ?
So there is the key to saving our hobby in my own opinion.If you have a layout or are involved in a club,support showing trains to those who otherwise would not get to see them.