At least it seems with Gold now you'll be getting dedicated servers, where Sony will just pocket your PSN plus $?
I mean the double standards in play here are mind-boggling
PS+ is already a great value (for consumers) even without online gaming for which we don't know the details.
Sony are providing 'free' games and network infrastructure for that PSN fee. That's their official line on why they have made PSN+ necessary for online gaming, anyhow.
http://www.vg247.com/2013/06/17/ps4-gara-explains-new-ps-plus-subs-cross-game-chat-more/ee on PS Plus," Provinciano said. "If players come to expect that every game from a developer will be eventually made available for free, it will eat into day one purchases. I'd determine it on a case-by-case basis."
So part subsidising hardware, part online network (part profits )
Gamasutra has an interesting article about profitability of PSN+. Well it's from the dev's point of view, but in the big picture it affects Sony as well.
http://www.gamasutra.com/view/feature/191966/playstation_plus_good_for_.php