I usually get downvoted for this kind of comment, but I'll put it out there anyway.
Apple's ecosystem is designed around people that easily spend money. It's a common trope around here that Apple gear is overpriced (which I disagree with) but given that, and their financials which are unlike any other comparable company, you can only conclude that Apple buyers spend money - a lot of it.
I'm end-to-end Apple gear. A lot of the people around me are as well. I don't want to dick around with cobbling some system together, deal with any more accounts than I already have (200+ passwords in my 1Password - welcome to adulthood), or deal with security issues. I've worked hard and make decent money, and at this point in my life I want things to be easy more than I want them to be cheap. I am Apple's target market. Is Apple Music lower quality or more expensive? I literally don't care. I just want to be able to pull up a song on my watch and stream it to my airpods no matter where I am. That's it. I'll pay more for it. I don't have to install an app. I don't need to enter my l/p. I can airplay it to just about everything.
This is what Apple does. They rarely beat competitors on the bullet list, but when it comes to 'look at your phone and all your **** is unlocked', they're unbeatable. They play the system integration game better than anyone else, and if it costs a few bucks more, I'm happy to pay it.
And enough people have voted with their wallets despite the prices Apple charges to make it as financially successful as it is today. I think that says a lot about how great a company Apple is.