A starmen.net-backed petition didn't get it done. Putting Earthbound and Mother 3 at the top of most-wanted lists in Nintendo Power for several months straight didn't get it done. Translating Mother 3 didn't get it done.
No, it took requests on the Japanese Earthbound MiiVerse page to get it done. So next time you guys want something brought over, you know where to go.
Note: I'm really not sure what it was that finally got Nintendo of Japan to listen. So, lets just watch this video of Earthbound fans thanking Nintendo for releasing the game in Europe and North America.