For these properties, they charge premium-based prices. For iOS, they don't make them universal...which as a business decision is fine, if unpopular. But they delay the iPad versions for months for inexplicable reasons, but I guess there will be fans who'll pay another $10+ for the new version.
So I don't think the porting of FF3, widely considered one of the worst of the early Final Fantasies, to be much more than another cash-in by Square.
* as cdr noted, the language to market this Ouya port is a bit hyped and misleading: http://news.ycombinator.com/item?id=4317397