Look, if Nintendo only have about 100 fans, they would stop making games/consoles a LOOOOONG time ago. But Nintendo has millions of fans that some are taken away from Fortnite's popularity. But you overlook those details and say that eating poop is the same as having a Nintendo console. Look at the franchises they made:
Mario, Yoshi, DK, Zelda (rest assured that Zelda is the princess, not the green wearing swordsman), MegaMan, Metroid, Kirby, Mother(games with that physic kid), Starfox, F-zero(captain falcon), and more!