Apparently, one of the reasons why the BWBA era failed was because merchandise sales were low, and, it shows with the rest, with Wood only lasting 4 years, and the die-cast range being constantly replaced. But, Trackmaster lasted for a good while, in fact, it lasted the longest before the All Engines Go change, as it started back when Tale of the Brave released. My theory, though may be obvious, is that these ranges were supporting this range, and with those out of the picture, thanks to the magic of ✨Fiddling✨, there wasn't really anything to support it.