Unfortunately it's really not that easy. Everyone could ask Nintendo to do a localisation of a game, but everyone wants something different, and they aren't necessarily the ones who decide whether or not a game releases in another region, it's usually the developers/publishers/whoever decides to localise it. Unless a huge amount of people demand for something, they would see no need to fit to a (very) small demographic, especially considering it may not be very profitable for them to do so. That's why fan translations such as this very one exist.