The console will not block used games. They will allow publishers/developers to do so. Some games will allow be played used, others will block completely. But I bet most will allow a trial (like the 1 hour PSN+ Trials) with purchase for the whole game.
This just shows there are 1000 CoD fans for each hater. Although, all the haters are in this site posting comments. The fans are out there enjoying their game without any concern about what's going on here.
Single-player-only games are dying because of used game. Developers can't make much more money on multiplayer games. Fortunately, single-player games will be back stronger on next-gen consoles (no used games allowed).
ClaudiusCaesar's comments