Does it benefit Apple from removing this app? Yes, because it has a competing service - Apple Music. Apple shouldn't be the middle-man here deciding what apps its developers can create for its platform and what apps it users can install and use. It is prone to abuse, as many examples highlight. Even Apple shareholders should be questioning why Apple is wasting its time and money on litigations on legal disputes between third-parties (here the copyright holders and the developers).

I was comparing the lawless freedom of the darkweb with lawless society. They really seem one and the same. In contrast the conventional internet has surprisingly little overlap with conventional society. Not sure which historic dystopian society it resembles most closely but it ain't western democracy.

Nobody challenges Apple's monopoly of first-party services in their own domain.