Manufacturers of RVs typically don't give out 'national' franchises, even for even the Largest of dealerships who may themselves have many locations in many, many states.
Franchises are typically VERY local, or even regional, just like your local Chic-fil-a or Arby's restaurants: the local dealership, or fast-food chain, has an 'area' that is theirs. No other 'dealer', with that same brand, is allowed in. Would you want a business that you built, and sold a certain RV brand for many years, to have the manufacturer allow a competitor to start-up across the street with the same Brand? NO.
That's also why Winnebago and Itasca, while essentially the exact same models with a different label on front, are sold at DIFFERENT dealers - so that Winnebago, the mother company, can actually have two dealers, in the 'same' area, but selling two 'different' models, though their similarities are the same, and they are built together down the same 'line' at the factory.
The local Winnebago dealer can't complain that this is the case...(well, they CAN complain, but since their contract is for 'Winnebago' models only, they legally have no standing), and the public can choose between two MAKES, with two different dealers, instead of two dealers carrying the same make.
__________________
|