I think marketing is at the root of this but its not a failure from their perspective...
Classic FUD (Fear Uncertainty Doubt) e.g. the manual for my chainsaw says 50:1 for Husky Oil and 33:1 for JASO-FB oils with the sub text being "do you really want to risk not using our oil?"
There are plenty of good quality JASO FC/FD oils around which are good enough for racing two stoke motocross and go karts engines. My guess is the Husky oil is FC/FD but they don't want you buying the alternatives.
Incidentally Yamaha do exactly the same with their range of Yamalube oils for motocross bikes...