For the wide market, p2p and torrenting is done for music delivery. It's an awful lot of work to search for, download, verify, and import an album when libraries 30 million tracks strong can be had at your fingertips for the cost of a couple of coffees a month. The music industry did pretty well with mp3's once a good store and delivery system was put in place. Inexpensive streaming isn't going to send people back to doing it manually in any large numbers.
Who knows what will happen with Apple Music. It may flop, it may turn out to be a big deal. One thing is that despite their commitment to making it cross-platform, they won't have the advantage of being pre-installed on Android, so they will have to convince an awful lot of those folks to change. Not sure how successful that will be...