According to Bloomberg, with the uptick in online gaming such as Facebook and Apple, companies that create their games for consoles aren't appealing purchases right now especially since each of the major three console manufacturers are set to be releasing new gaming systems in the next few years. (thatvideogameblog.com)
According to Salomon Smith Barney analyst Jonathan Litt, the decline was due to the «anniversarying» of new gaming systems such as Xbox that were top sellers in 2001, and a lack of new hot products to replace them. (nreionline.com)
Moreover, Wii U's poor performance didn't spread panic in camp Nintendo as the company seems in no rush immediately introduce a brand new gaming system. (segmentnext.com)