A journalist asked the president of Nintendo America if they had any plans to add in Twitch streaming support to the Wii U, the response, no. Why? "We don't think streaming 30 minutes of gameplay by itself is a lot of fun."
In other words, they haven't figured out how to monetize it for themselves. If they can't get the money from it, why make it easier for others to do so?
I am in no means a Nintendo fan, in fact I haven't touched a Nintendo console since the N64. I do however, find their struggle to find their place without giving in to the strategy that works, while trying to make life harder on the people they are trying to get money from.
Source: http://http://www.polygon.com/2014/6...eaming-because