I have nothing against Apple's hardware products, they're first rate. I use an iPad Air, and now an Air 2, provided by Megacorp. They're almost as good as my personal Samsung tablet, except for the missing buttons and not as good screens. I subscribe to Apple Music, pay for it via the Apple store. Great service.
In this case, I think they're absolutely wrong, and need to change their practices, because they are being unfair to competing music services. If the tables were turned, and it was Google doing this, you can bet the Apple Boyz would be screaming.
I use Google's open source libraries, AngularJs, Angular Material, Google Charts, and many more, in my job every day. They are the among the best, most widely used libs available, and they are free. They have contributed as much as anyone to the Open Source community, more if you consider Android.
I can't think of a single Apple lib I've ever used, certainly not open source. Let's just say that I admire Google's contributions to the advancement of technology. Meanwhile, I observe Apple suing over the rounded corners of a phone, which they had nothing to do with inventing, avoiding tax payments, and many, many other odious practices. Not what I would consider a good corporate citizen. This subscription practice is simply par for the course. They do it because they can get away with it. I do hope that they will be compelled to change.