Okay, allow me to add my personal thoughts to the discussion.
First, the hobby is not "dying." The hobby is changing/evolving, which is somewhat inevitable and to be expected. The demographics have changed and those of us in the hobby as well as those supporting the hobby with product and services have to change with it. The O gauge world has been blessed with a phenominal amount of product starting roughly with the last decade of the previous century, and with exponential growth in the number of people who were eager to support this segment of the hobby. In alrge part, that population consisted of individuals, like myself, who had grown up with toy trains, passed through much of our adult lifetime doing the things the "real world" required of us, and who finally reached a point, financially and time-wise, where we could pursue a leisure activity and, in terms of model railroading, acquire the things we had, or wished we could have had, in our earlier years.
At the same time, the "real world" around us has been changing. Those of us who grew up with trains--real and model--are getting older. Not only that, but we also have had some 30 years now to acquire the trains we want--or feel we "need"--to support our modeling interests, and many of us are pretty much reaching something of a saturation point in terms of product. I know I am, and I am dealing with that "problem" by focusing on more specialized interests...particular road names, era to model, type of modeling and operation, etc. Even that has not really cut down on the number of new product I buy, but it has helped to reduce the overall inventory because I now tend to sell things in order to purchase new things (a practice my wife tends to support and enforce).
The hobby retail segment has changed dramatically, thanks to the influence (for better or worse) of the Internet and also due to the fact that many of the folks who have been serving both the industry and the retail end of things are reaching, or are now past, retirement age and therefore closing up shop. There are, without doubt, far fewer hobby shops around today than there were just a mere decade ago, and that is not likely to change. The business model for making and selling model railroading product is very different today than it was back before the turn of the century. BUT, that does not mean the hobby is dying...that simply is not going to happen. It is just evolving and adjusting. It may be that there will be fewer overall participants in the future, but those participants will be just as avid and dedicated as what we are today, and new participants will be added on a regular and continuing basis.
The York Meet will continue to evolve. My guess is it will eventually return to its roots as a collector-oriented activity and event, and that is perfectly okay because collectors are the foundation of this segment of the hobby. Truth be told, they are the ones who will assure that the toy train hobby is perpetuated to future generations, be it in large numbers or small. There is, in my view, nothing wrong with seeing a Train COLLECTORS Association event go back to its roots so long as there are sufficient volunteers and participants willing to keep it going.
Now my personal interest these days is more in model railroading and its operating potential rather than toy train collecting. I used to be an avid collector--still am to a certain extent, I guess, because I have a ton of trains in various scales--but in recent years, thanks largely to advances in the technology of the hobby, I am far more interested in doing something with the trains I have. I have also discovered the fun of enjoying this operations-oriented activity with others who share that same interest. The technology--Legacy, DCS, DCC--combined with a treasure trove of wonderful new product and equally wonderful new friendships, has opened-up a whole new world of fun for me.
As for the magazine and this forum that exists thanks to the magazine: We are doing quite well, thank you very much. If there are signs of us "dying", I have yet to detect them. Yes, we did go to 84 pages this year, upon MY recommendation. In the consumer magazine world, advertising foots the major portion of the publishing bill, while subscriptions support that effort. With manufacturers tightening their belts in recent years in terms of advertising dollars spent, and the number of retailers declining in our hobby and elsewhere, it simply made good sense to adjust things so we are more in line with a decent business model for a publication of our type. Most importantly, we still have the support of that always-most-valuable community of hobbyists and contributors who make the magazine (and this forum) what it is. So long as folks are willing to take the time to document and share their hobby experiences, I think it's safe to say that we will be around to spread the word both within and outside of our O gauge world. Be it in print or digital form--or both--there always is an insatiable appetite for information in any hobby. I'm hoping to be able to help provide that info for a while longer simply because I enjoy doing it and am able to do it. I'm at the age now where I don't really need a job, but I'm lucky enough to be doing a job that I thoroughly enjoy. It doesn't get much better than that...except, perhaps, for the fact that I now have my hobby-related laboratory (train room) in the basement below my home office.