Interesting Opinion.
For anyone actually interested in this, Faza at The Cynical Musician has something to say about this matter, and not what I would have expected.
His basic idea is that musicians should grant Apple a royalty-free window for the sake of insuring that Spotify has some serious competition in the streaming market.
For those of you without ADHD or similar, you can find his opinion at http://thecynicalmusician.com/2015/06/apple-musics-free-trial-period-a-lesson-in-windowing/