"Nintendo users only buy Nintendo games on Nintendo systems" How true was this?

[Wman1996]

I think the reason it's such a big thing with Nintendo is because.
1. The low install bases of GCN and Wii U. If not a lot of people have the systems, third-parties usually aren't as motivated and less for the audience to pick from. Minecraft was the only third-party game on Wii U to sell a million or more units, unless you count Lego City Undercover which was only a first-party game on Wii U and not its later ports. GCN on the other hand had several million-sellers: SoulCalibur II, Sonic Mega Collection, Sonic Adventure DX, Lego Star Wars, etc.
2. Nintendo games have a pedigree and appeal to the install base. Even if somebody's collection of games on a Nintendo system isn't the overwhelming amount (say 33 to 50 percent instead of 75 to 95 percent) that's still probably a larger percentage than the other platform brands. The data shows that PlayStation and Xbox players are not playing first-party games in the overwhelming amount that happens on Nintendo.
Nintendo users only buying Nintendo games, or even overwhelming buying them with only one or two third-party games is largely a false perception.