Again, your entire argument is basing itself on the assumption that Nintendo put all of its eggs in the Rio Closing Ceremonies, that their marketing money was spent entirely on this appearance. Something you have no proof of while also ignoring the fact that Nintendo, at least in the western market, has been fairly active for the past year. Include new game sales, new games, even a new plug-n-play console out in the coming months. All of these things have been getting coverage, they even have commercials for these online and in tv networks that can cater to the demographic.