Because selling consumers cheap trash that they have to replace multiple times is worse for them than charging a higher price for a licensed product.
We’ve been over this across multiple generations. 3rd party controllers, 3rd party memory cards, they all sucked. Cheap? Yes. Very cheap, but if they’re half the price and you have to replace them 3 times, they stop being cheap.
Not that some official products are any better, the Elite controllers continue to be garbage and have spawned class action lawsuits.