They realised probably that it is cheaper to make a game for DS, 3DS, PSP and/or Vita that as many people will buy if not more and it doesn't cost an arm and a leg to make.
SquEnix did this with Dragon Quest IX and probably would have done it with FF if they knew what the hell they were doing anymore, sadly they don't..
..
Lack of big JRPG releases didn't help either, only 1 main FF game, no Persona, other JRPGs were released in early gen for the wrong console.
Hmm, pie.







