Until the Steam Deck I was also a PC+Nintendo person.
The great thing about Nintendo consoles was that their library of games covers 80% of games available on other consoles if you want them. Otherwise, you could easily never surpass more than 25 games, all of which could easily only be Nintendo games.
For a fairly long time there was just no need for anything else, as something about the Nintendo exclusives felt more reasonable than the PSN/MS exclusives. Probably something to do with them generally being cheaper and more unique games, or maybe just that the price of the console isn’t as high so it doesn’t feel as “exclusive”, even though they are.
For example, looking at how PSN uses their games to really sell buying into their console; Spider-Man, Horizon Zero Dawn are examples of games that did so well Sony was almost forced to let them come to PC, somewhat thanks to Microsoft. Or how these companies are trying to sell games for versions of their consoles - Sorry, you bought the PS3 and 4 version, you’ll have to upgrade for the PS5 one! No no, this company is good because they gave the game you paid for already to you again for free!
I haven’t bought a Switch game since I got my Steam Deck and hacked my Switch so I could dump the games I own.
Now I have a PC console that has my entire gaming library consolidated. Bonus: a majority of the games play better emulated. Cons: missing internet on games (and including it would only be hacked servers). And before this point, the only games I ever repurchased were ones I wanted to support the devs of, Doom 2016, Monster Hunter: Rise, Crypt of the Necrodancer.