It can't be just that. They would've just go with Sony and that was it. Square didn't get this angry at Nintendo because they chose a format they didn't want.
Years after Square jumped off the Nintendo ship to support PlayStation with a series of smash-hit Final Fantasy role-playing games, Nintendo's retired president, Hiroshi Yamauchi, made some hilarious comments about the booming genre - and about the people drawn to it. "[People who play RPGs are] depressed gamers who like to sit alone in their dark rooms and play slow games," he noted in a 1999 interview. Yamauchi - who incidentally has prided himself on the fact that he has never played a videogame - went on to call RPGs as a whole both "silly and boring." Square Enix's Final Fantasy and DragonQuest RPGs continue to rank amongst the highest-selling games whenever they are released in Japan or America.