And yet it still doesn't cover their losses from the last 5 years, even of they collected that for the next 30 or so years. But that's for a whole different topic.
Point being that Sony's involvement with Bluray is not as significant as we all used to believe back before this generation started. Sony does not own the format nor are they only company to produce or profit from it.
Nintendo has tight friendships with Panasonic & Sharp who are both on the board and likely own key patent in the BRD tech, so if they wanted it, they could make it happen and Sony is not even part of the equation.