Completely different systems, completely different life cycles. There is very little comparison here. By 2017 the PS4 had literally just received major 1st party support like Uncharted, Horizons and the majority of third parties were still releasing games that began developement when the systems were announced.
You also ignore the part where I say Switch 2 lives alongside the orginal. Anytime between 2021-2022 would be ideal in terms of hardware spacing, 2021 would be ideal in terms of software support.
What exactly do you think would happen if Nintendo would release a Switch 2 in 2021, please elaborate? For me their core audience will rush to buy it (their already own a Switch) and use it as as their primry system, meanwhile the more casual audience or late adopters will buy a $199 Switch for Mario Kart 8, Animal crossing,Smash Bros, 2D mario etc.
See my post above. There's simply no need to rush willy nilly onto the next system when your current one is selling like crack. There's a reason the most successful platforms of all time weren't replaced after 4 years, it's just bad business to kill the goose that lays the golden eggs while it's still laying.
Bet with Liquidlaser: I say PS5 and Xbox Series will sell more than 56 million combined by the end of 2023.