I really want to sum this up simply.
1) Apple made the iPhone. it's there platform, they don't have to share with anyone, ever. Zero requirement to do so.
2) Developers want in on the iPhone/iOS ecosystem. They can make money doing so.
3) Apple says, OK sure BUT you must pay us 30% cut, which is cheaper than any store at the time and since.
4) Apple says, if your not charging for your app (Ad's or otherwise just want to be free) you may do so, zero cut for us!
5) Developers, cool that sounds pretty good.
6) Apple already sells music (iTunes). Spotify wants to sell subscriptions. Cool they do so, 30% cut on renewals. Cool.
7) Spotify, well we really don't want to give you anything really. Can we just have them go to us directly?
8) Apple, sure they can. Just don't advertise that fact on the App Store. You can get them in any other way you want.
9) Spotify, but that makes it harder for us... Can't we just not pay you and yeah.???
10) Apple, FU Spotify. You want this business or not? We made the phone, and the system to distribute FFS.
11) Spotify, yeah we know but still just let us leach man... It's hard out here in these streets. You making mad doe.
12) Apple, listen.. You hear that? That's me not giving a F. You want the full cut, make a phone son...
You can sub out EPIC in that for Spotify if you wish.