I know nothing about headphones, nor do I want to invest any time learning about headphones. I’ve had a bunch of Apple products that have never disappointed me in the last 10+ years. I’ll buy these overpriced headphones because an extra $200 for a product I’ll probably use for 5 years will not break my bank account.
(paraphrased) "I know nothing about the subject..." "Not gonna learn about other options..." "Apple doesn't disappoint me..." "I'll buy the overpriced stuff because I can afford it..." This Apple-blinkers comment is telling, and refreshingly honest. I'm sure there are other brands with that sort of attachment, but none that exemplify the phenomenon more.
Nobody has time to exhaustively research every product they buy, and most people don’t have the inclination. Therefore when they find a company that meets their needs reliably, they tend to keep buying from them unless there is a problem.
This is a normal feature of business. Every business tries to satisfy their customers in this way.
If there is something special about Apple, it is that they have a lot of satisfied customers.