I had the pleasure of sitting in on Charles Dunbar’s Con-vergence panel at Otakon Vegas, in which Charles addresses the issues around why other fandoms seem to be taking over anime conventions. Charles’ conclusion is that anime conventions are more welcoming places, that the anime fandom is just more accepting of other fandoms. Then there is the more bleak side of things, the theory that anime fandom is just a secondary or lesser fandom than some of the more prevalent media represented.
The chief cause of the weakening presence of anime at anime conventions is that anime is a medium, not a genre or a single show. So where a group of ten thousand people may not have that many shows in common, three thousand of them have all seen Doctor Who and the other seven thousand has seen the Marvel film adaptations. So the Iron Man cosplayer is going to have more positive attention than the Lupin cosplayer sitting in the corner. Anime is a unique beast in this respect. Single media conventions, like a Star Trek convention, assume that all attendees share at least a common cannon. Even the old school science fiction conventions were dominated by the mass media properties like Star Trek, Battlestar, and the like. With anime there can be almost zero connection between the forty year old fans drinking in a bar discussing the tape trading days and the fourteen year old girls running around in Hatialia cosplay.
The element that made anime so appealing was that it was an entire world of media waiting to be explored, but that allows individual fans to go off into a million directions. This issue can be visibly seen at conventions. There are people who go to the conventions just to cosplay, play dress up and hang out with their friends. There are people at the same event who want to seek out academic programing in order to learn more about the medium they’ve come to celebrate. The latter is a much larger and younger group, one that may never make the transition to going to panels about anime. So if their friends shift over to dressing up as a non-anime fandom that is where most of the group will go. Anime fandom on the Internet is similar. I can write my essays all I want but the mass of people looking at screen caps and writing fan fiction isn’t going to care.