That happens in every industry. For every hardcore BlackBerry user out there, there are at least 10 who moved on to Android or iPhone because BlackBerry didn't have Instagram. Just like Nintendo in the 90s, BlackBerry defined an industry and was a pioneer. As with Nintendo, they're struggling in the market today. You can see this in every industry, it's not only limited to gaming.
The problem is, as fun and creative SM3DW is, and as critically acclaimed as it is, there are simply more people interested in playing GTA V. A good example is Knack, which even Shuhei Yoshida acknowledged was a disappointment and failure, trying to cater to "everyone" when in fact it's FIFA, CoD, GTA, etc. that owners of PlayStation consoles long for.
Nintendo's greatest failure this generation is no doubt marketing. "Wii U" is just as stupid as "New Nintendo 3DS" and it signals to me that Nintendo still hasn't learned from its mistakes.