On the used games controversy, Shuhei Yoshida SWW Studios' head said Sony's official pr statement is that "all disc games on PS4 will work with any PS4." So that exact phrasing reminded me of one of the "SuperDae" leaks about the then Orbis allowing "multi-user" sign ins on one PS4 console (pictured in this fun graphic: http://img.gawkerassets.com/img/18cbv4k6xjv7fjpg/original.jpg ) So if you'll notice in the bubble next to SEA Account, the text reads "Rights" ie your license to play a game.
So what I think is interesting about Shuhei's quote is that it seems to allot for exactly this possibility. Basically publishers could still block the selling of disc games, but if you want to share your game at another person's house you can log into their system and allow that content to play. The point is I guess that I might not conclude that used games won't be blocked next gen just yet. It seems like Sony's vagueness would indicate that they themselves will not at least at first, but companies like EA, Activision etc might.
I think what could happen is that we just start to rethink retail games as being these big premium products, and/or games that we buy on become a much longer term part of our playing life. Like the whole thing about Destiny is that it will last for 10 years. Instead of the CoD model, you're just going to add and add content. Madden PS4 could finally be that supposed holy grail of a single purchase where you upgrade the roster every year. On the other hand, we could see a spate of singular game PSN accounts being created every time a major release comes out.
Or what could develop is that like with Netflix a certain number of users can be logged into an account simultaneously. Maybe if you and your house mates all of consoles, you can essentially buy every game once between you. If that happens though, perhaps you need a second layer of accounts for like "micro transaction" style purchases, where you let players buy that purple hat they want (apparently Team Fortress players love hats?) individually. It is kind of a "brave new world" but it is also exciting because it could finally mean the ascendancy of a digital market and a unified distribution model for all kinds of media.