The thing is, the 3 month free trial isn't in the least bit outrageous to anyone with even an elementary level of business acumen. Why do you think have the majors have all agreed to this and aren't complaining in the media? You think they're in the business of wanting to lose money? Of course not; unlike some people who are only able to think about the short term, they recognise that the 3 month free trial is a necessary investment for them to secure and maximise a future revenue flow, over an extended period of time. If Apple Music is done well, it virtually guarantees them a solid source of dependable income for as long as the service lasts. Independents could, and eventually will, of course benefit from this too.
I don't think it's really about that for some artists though. It seems to be an issue that runs as an undercurrent below this outrage over the 3 month free trial thing. What I see happening is that many artists are simply putting an economic value on their work that is completely out of line with the true monetary worth of recorded pop music in 2015. It's understandable given that an artist will pour so much of their time, energy, soul and creativity into creating music. Of course they're going to value it highly, because it has high value to them personally. But the reality is that because music is now easier than it has ever been to consume, create and distribute, it has lost a lot of economic value. These conditions have made things wonderful for people who listen to music because they love music (they have more music to listen to at a lower price than ever before), and it's wonderful for artists who create music because they want to share their creativity with the world (they have a larger, more immediately accessible audience than ever before). I concede that it's maybe not so wonderful for those looking to get in to music to make obscene amounts of money. But this actually seems like a step in the right direction for me.
Streaming is clearly the future of how music is going to be consumed and artists can resist the change all they want, but they're only going to hurt themselves in the long run. To quote one of Steve Jobs all-time favourites...
Come gather 'round people
Wherever you roam
And admit that the waters
Around you have grown
And accept it that soon
You'll be drenched to the bone
If your time to you
Is worth savin'
Then you better start swimmin'
Or you'll sink like a stone
For the times they are a-changin'