There's no clear domination as a whole. Domination only tends to occur in certain aspects.
Home console units sold: PlayStation
Online subscriptions/services: Xbox
Dedicated hardware specs: Xbox. Considering that the Xbox, Xbox One X, and Xbox Series X are more powerful than their competitors I have to give this to Xbox. You could potentially throw in the Xbox 360. It may be weaker than the PS3, but it was a lot easier to develop games for.
First-party software: Nintendo
Handheld console units sold: Nintendo
Freedom/customization: PC gaming (No matter what OS you use)
Casual games: Mobile devices
Most affordable hardware: Nintendo
Hardware and software profit: Nintendo
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: 122 million (was 105 million, then 115 million) Xbox Series X/S: 38 million (was 60 million, then 67 million, then 57 million. then 48 million. then 40 million)
Switch 2: 120 million (was 116 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
