1. The population of fans seems larger than it is because they're the ones who are more vocal on the internet.
2. Even a big Nintendo fan is only going to buy games that interest them, and if they're not buying a lot, it's Nintendo's fault for not having a great library. (Nintendo is my jam, and even I can't say with confidence that it was worth buying at launch.)
Currently playing:
Bloodbath Paddy Wagon Ultra 9