| Well certain planets become inaccessible after you complete them, and the game is linear (although open ended within its linearity) so they could split it up that way. I'm sure there are plenty of ways they could have split up the story portions without sacrificing the ability to participate in side quests at any time the player wants. The only reason Blue Dragon was multi-disc was because it had so many pre-rendered movies. You could go pretty much anywhere in the world including old areas once you were on disc 3 without having to swap discs again. | 