I'm with Sony on this one. Like other people have already said, it'll only be a matter of time before other companies try the same thing. Sony is nipping this in the bud.
In this particular instance, consumer choice is a bad thing, because you can't trust EA fans to just refuse to use "EA access". For years now we've been saying "Vote with your wallets and don't buy EA products anymore if you don't want half-assed games like BF4, Need For Speed locked at 30 fps, Sim City 2014 fiasco, Dead Space 3 and its misplaced priorities..."
Guess what? People still buy EA products. Even after the mess that was Dragon Age 2, people bought Mass Effect 3. Even after the mess that was Mass Effect 3, people are getting hyped for DA: Inquisition.
So no, I don't blame Sony. If they allowed this, people would be subscribing in droves even though EA has time and time again proven their incompetence in the gaming industry.
EA Access would blossom and then other companies would surely follow.