Nintendo is mostly the one keeping consoles alive. For better or for worse, they have scores of exclusives (most of the best ones are Nintendo's own games) and feel very different from PC gaming.
Xbox is very, very similar to PC. And even PlayStation is blurring the line.
Consoles used to be developed in secret and were very different from PCs and mobile devices in architecture.
Sony relying on expensive, cinematic games is quite stagnant to an extent and not sustainable.
Lifetime Sales Predictions
Switch: 161 million (was 73 million, then 96 million, then 113 million, then 125 million, then 144 million, then 151 million, then 156 million)
PS5: 115 million (was 105 million) Xbox Series S/X: 48 million (was 60 million, then 67 million, then 57 million)
PS4: 120 mil (was 100 then 130 million, then 122 million) Xbox One: 51 mil (was 50 then 55 mil)
3DS: 75.5 mil (was 73, then 77 million)
"Let go your earthly tether, enter the void, empty and become wind." - Guru Laghima