F-Zero is due to the fact that Miyamoto can’t figure out what to do when Mario Kart 8 specifically took over the role of F-Zero with anti-gravity and 200cc at 8. F-Zero needs a reboot / trick to separate from Mario Kart 8.
Star Fox has long been paved by the derailment of the Star Fox Adventures franchise. Nintendo tried to remake Star Fox 64 and restart Star Fox 64 just to not revive the series (the latter only failed because Wii U and hardcore gamers refuse to leave the comfort zone). Ubisoft’s use of Star Fox could not do anything. Star Fox is kind of dead. Maybe in 30 years Nintendo can try to restart the series again (Nintendo will relaunch Star Fox 1, 2 and 64, in the meantime).
Kid Icarus is mainly due to the fact that no one is available and if anyone was available, no one made a successful pitch for a new Kid Icarus game. Sakurai has temporarily revived the KI franchise, but does not want to return to this franchise. Uprising had good sales, but had great criticism of the controls and Nintendo may feel relaunching Uprising on a newer platform, with better controls and a better multiplayer balance, will not be the answer to revive interest in Kid Icarus.
All other minor IP addresses are IP addresses that met only the expectations or remained short. Some of Nintendo’s new 3DS-era IP addresses are missing for Switch. Mallo and Pushmo have not been seen since the Wii U / 3DS. Sakura Samurai has not had a new game since 3DS There are many other examples.
If no one buys these minor titles, then Nintendo has no choice but to make Mario, Mario Kart, Zelda and Smash Bros. games. (occasionally receiving the Pokemon game from the Pokemon Company). Yes, that means buying games you don’t want like Paper Mario: Origami King and Star Fox Zero (Wii U).
If you don’t buy minor games and games that change the formula or have non-traditional controls, you see Nintendo in a third-party production role that they do now (after all, people have always wanted Nintendo to go to a third party even now we see them in a production frenzy from a third party, with a few games outside of Nintendo’s main AAA).