I would argue that while some of these are coincidences, Super Smash Bros does have at least some effect on what Nintendo chooses to develop or localize for non-Japanese markets. Fire Emblem had never been localized before SSB Melee, and I do believe it was because the appearance of Marth and Roy in Melee got American gamers interested in the series that Nintendo finally decided to give Fire Emblem a chance in the US. Pit appeared in Brawl, and then Nintendo made Kid Icarus: Uprising. Even Earthbound's VC release could be attributed to the popularity of Ness and Lucas in the SSB games.
Think about it: if Nintendo gets feedback that certain characters are very popular and that gamers are interested in seeing the series that the games came from, it's entirely conceivable that they would act on it.


