It's not like Apple forced you to buy a Mac or an iPhone. If anything you have to go out of your way to get one, because you see some appeal in them - as otherwise they're more expensive, with limited model choice, less bang for the buck, and a minority market share wise compared to most PC/Android stuff.

So, perhaps those buying them know what they're doing? Walled garden (aka "curation") for many is part of the appeal.