"Nintendo users only buy Nintendo games on Nintendo systems" How true was this?
It was hyperbole at best. But not particularly true. On NES, SNES, Wii, DS, and Switch there were hundreds of millions of non-Nintendo games that Nintendo users bought. Not to mention that Nintendo users would often own multiple platforms, and buy games on those as well.
It's true Nintendo users would often gravitate toward Nintendo games, but that's because Nintendo is the most popular video game developer in history. Nintendo has also produced most of the killer apps through video game history - usually there's only one or two killer apps a generation, and this gen Nintendo had three: Mario Kart 8 Deluxe, Breath of the Wild, and Animal Crossing: NH.
Also, Nintendo has a tendency to partner with third parties that become very popular on their consoles (RARE, HAL Laboratories, and Gamefreak being the biggest examples) and therefore kind of adopt those games as "Nintendo games" in practice; although, technically they're not.
I describe myself as a little dose of toxic masculinity.
