ExoticPearTree parent
I am going to comment on the last part of your post: No one is forcing people to buy or use Apple products. You can buy a Pixel, a Samsung or one of the other lesser known Android brands and be on your merry way. And you can buy earbuds for those devices too; Samsung offers their own brand for example.
There is an effective duopoly in the smartphone OS market. iOS and Android, that’s what’s makes Apple a gatekeeper.
Duopolies are just as dangerous as monopolies. Basically anything where there is a dozen or so competitors tends to be dangerous, as the US loves to demonstrate in as many industries as possible.