That's a lame excuse for not even cataloging a new item.
LGB/ Marklin has it's problems...that I'm well aware of.
Aristo-Craft brought on it's own demise thanks to Uncle Lewis.
USA Trains/ Charles Ro has an ongoing survey about what the customers want next and choices are Challengers, FEF, Dreyfus Hudson, K4, F40PH, heavyweights, amfleet cars, 60' high-cube boxcar, 89' flatcar, 60' gondolas etc.
Accucraft/ AML is constantly pumping out new brass electric/ live steam engines. 1:32 scale brass passenger cars are next @ $300 a pop. A plastic GP60M is in the works along with 50' high-cube boxcars.
Over in the European Spur 1 market there is new products being released by numerous manufacturers.
While USA Trains has introduced 89' bi-level enclosed auto-racks which measure over 39" long x 8" tall along with 60' boxcars and 2 new kinds of tank cars MTH has introduced nothing.