Mark, I hope that the "shortage" pertaining to your O gauge track is a sign of positive, enthusiastic demand versus a very small production run. Though I guess it could be a bit of both, as your ad says the track was more popular than anticipated, which does not rule out a small production run.
When one reads this particular forum, you could get the impression that the market is gone totally scale, which is just not the case. Despite the selection of track systems available, every survey I've ever seen shows over 60% of the market is using traditional 027 or O gauge tubular and FasTrack. All the other many systems combined fall into the minority.
When I look at the Menards train pages, there are still plenty of items available to choose from. And yet some of them have sold out and appear to have sold out quickly. The Santa Fe war bonnet fantasy scheme on the rolling stock comes to mind. Some say they won't buy fantasy schemes, yet look what sold out!
The non-scale flat car with the non-scale army tank that made sounds sold out. There's been at least one additional run of that particular car that I'm aware of. That also flies in the face of what some folks think the market wants. Despite the reported inaccuracies of some of the military items, they appear to have strong sales. Hmmm, maybe there are more traditional toy operators out there than some theorize there are.
I just hope the overall sales remain strong enough to justify the new products. It appears that way, but only Menards knows.
Your line of buildings also appear to be doing well, as many have sold out. Obviously there is no expensive tooling as they are hand crafted items. Also there's the consumer bonus of unique offerings that have broad appeal. Some want larger structures, but would the sales support it? Obviously the middle ground is structures with footprints that have the greatest appeal. But as you have said many a time, you appreciate the product suggestions.
The Lionel Ready-To-Run catalog this year is smaller than last with not nearly as many traditionally sized product offerings. Some might view that as a change in the market. I strongly suspect it is more in the change in retail pricing of those products - which also affects the discounting. Obviously Menards has benefited from this. I personally like the smaller size of the Lionel 6464 sort of box car. But I AM NOT paying scale prices for a new production piece of traditional rolling stock.
So I add white paint to the top ends of the Menards box cars with decals for "Excessive Height Car." Works in my book.