The reason Spotify and Pandora had a chance to gain a stranglehold over the subscription music market was due to their freemium-based business model. I'm sure they've done the buesiness analysis, but does Apple expect existing/paying Spotify and Pandora users to suddenly drop those tried and true platforms and jump ship to Apple's new service (which is essentially the same thing?)
I don't blame Apple for at least exploring the monthly pay model and starting new users off with 'first three months free', but after all, Apple is very late to this market. If it's a bust and Apple can't move the needle, I expect them to include an ad-based free version in addition to subscription.
Pandora is just a crap nothing more I tried it the day it was introduced and tried recently but did not like it. at the moment Spotify is no 1 and will remain for good time, until apple comet for some discount program like student or something. Applaud to spotify's extreme quality and the way it finds the other songs or album playing but i hate the UI in my iPhone 6 plus as i hate back back and back and tap tap tap on top left corner........