The only thing I can use, to form my opinion, is what I see in videos. I supposed that the steam engine not having been around for almost 60 years might have something to do with this. However, it sure seems to me that diesel has surpassed steam, as the choice of modelers. Manufacturers produce more diesels than steam locomotives by a fairly large percentage and now that we all have the opinion that we must have actual designed models for the road we model, makes steam locomotives a chancy investment for the manufactures. USRA designs pretty much pervade steam engine offerings. However, I'm of the opinion that today's modelers really aren't interested in modeling the steam or transition era, anyway!
What do you think?