The leaks aren't talking about publishers doing it....it's the CONSOLE itself, not publisher choice. Of course, if the EA/MS partnership is true with exclusive content, then we know who is the ringleader of this shyt. nikkaz aint learn yet from their Simcity and Diable 3 debacle.s
There are leaks talking about the publishers doing it.
Sony already left the door open and is giving support for publishers to make that decision.
The biggest games from the biggest publishers are already rumored to have drm requirements. There will never be a game that has drm requirements on one system and not the other.
Think about it logically. Even if it is done on the hardware level on durango. Do you think ubisoft is going to release Assassins creed on ps4 without drm?
Again this is totally a publisher friendly concept. If Microsoft is doing it, it's due to pressure from publishers. If Sony is leaving the decision "up to the publishers" and providing them the tools to do it. Then they will do it.
The only devs I could see not requiring drm, are indies. And most of their games are download only anyway.