Apple Music also gets really good exclusives (which Spotify lacks aside from the occasional lackluster bonus track).
Gwen's latest album was available immediately on Apple while Spotify had to wait.
1989 isn't on any of the other streaming services (which doesn't matter because I own it, but it's been one of the biggest pop albums in recent memory so that probably matters for a lot of people). Apple has everything that matters right now aside from
25,
Lemonade, and the Prince catalog.