[gcr]

Totally agreed that preferring one form of service over another is a form of lock-in.

However, in favor of a certain music service:

- with iCloud Music Library, you can play all of your mp3 files on any device, Spotify-style;

- if you purchase an album from iTunes, you own it forever; this is not true of Spotify-streamable music. I've had some of my favorite albums disappear from Spotify, for example.

Long-term, iTunes, Apple Music, and iCloud Music Library seem like a better solution because they allow you to retain actual ownership/control of your own music collection, which helps a lot.