I believe it's been a point iterated multiple times by my brother, Kairon, but to put it simply, Nintendo is very obviously not like other companies in the way they approach the video game business, at least not in modern times. That said, a "fan" by the understood(?) traditional definition may find it difficult to appreciate Nintendo's output.
I'm staring at (or being stared at by) a Gene Simmons banner ad here on NWR as I write this post, and it struck me that the way people approach video game companies is much like the way they approach their other entertainment idols. They hold expectations about the overall persona, methodology, and philosophy represented or endorsed by their idols. In many cases, arguments break out over what, exactly, the "truest" or "best" persona of a particular performer/developer was or is. As an entertainment industry, it is a given that video games will have a talent pool constantly in flux, and thus new personas will become visible, challenging older ones to change direction or hold fast to a "core" fanbase's expectations.
And I don't think Nintendo wants to be the 60-year-old guys doing a reunion tour.