If PS4 actually uses off the shelf PC components. that way it will guarantee full BC with all future Playstations. Im sure as hell not going to get a PS4 unless I know all those non-sellable games will be able to transfer to my PS5. you get my drift?
http://www.youtube.com/user/Thereal50inchDLP -contains my Dreamcast project of putting HD vids of each US game up.http://bf3stats.com/stats_360/louerina
Even with 100% B/C, customers aren't going to stand for Blocked Used games.
Only Blind Sony Fanboys will buy a PS4 that punishes gamers. & they'll be the 1st to B**** & Complain at lack of sales from us not bending to Sonys power.
Punish the small fraction of people who buy used games? No big deal.
Face it, with Sony and Microsoft both coming out with patents to deter used game sales, this was going to happen anyway. PC gaming already is this way with almost everything digital. Same is going to happen to consoles.