I agree with your thinking. OTOH, many non-photographic companies supply their own "quality" branded products and also manufacture similar lower-priced "own-brand" products, often to be sold in the same shops....thereby selling to two different types of customer. Though maybe not as applicable now in the restricted market for any photographic film.
Originally Posted by Thomas Bertilsson
Although, IIRC correctly, Ilford have said that while they don't use the "Ilford" emulsions for other labels, they certainly manufacture their Kentmere films with different emulsions to tap into different markets.
(And we still have no confirmation that Fuji is "not supplying OEM films anymore"!!!)