> This feels like the explanation for the Wii U, despite Nintendo obviously not being a startup of any kind.

This is a particularly interesting example, because they followed up with the Switch, which is, in some ways, the diametric opposite of the Wii U. Arguably, what happened was that they had the right idea that the hybrid TV/handheld format was the right blue ocean play, but the Wii U failed by being TV first and handheld second, instead of handheld first and TV second. You could probably build a whole business strategy course on just this discussion.