Seems to me that the TAM for a fan is basically infinite for any single company, therefore making a product that is too high quality or long lasting could still get you growing yoy sales for a long time and stay in business. But you’re probably right that vs competition lowering prices (and quality) they’d lose.

There’s probably an optimum for maximizing sales/growth that doesn’t land on highest quality products in the real world, with non rational consumers, imperfect information etc… sadly.