“This issue is related to whether a Final Fantasy VII remake will happen or not,” Kitase told Ultimania Magazine, “It is very hard to make games on PlayStation 3 in the same style as the games in [the PSone] era had. Making graphics will take enormous time.”
In that same interview, Motomu Toriyama explained the lesser amount of towns in Final Fantasy XIII, also blaming the high-definition era.
“Yes, [a ‘non-stop’ story] is one of the reasons [of the game’s linearity],” Toriyama said, “but more importantly, it is a result of considering high-definition graphics will be the mainstream. Considering the amount of work to make graphics that deserve high-definition, it is hard to make towns in the conventional style.”
Thanks, The Lost Gamer.