These are always fun...*grabs popcorn*
It's tough to even remotely predict lifetime sales until a year or two into a platform's life. But I'll stop rambling and I'll bite with early predictions.
PS5 finishes with around 105 million units, surpassing the original PlayStation by about 2.5 million units.
Xbox Series S/X finishes with 55 million, which is either about the same or about 5 million better than the Xbox One (obviously the Xbox One S is not discontinued yet).
The dedicated hardware market is stabilizing to shrinking in terms of hardware sold each generation. It's not on a clear uptick anymore, and it's not going to hit its crazy high 510 million units peak of the seventh generation (Wii, PS3, Xbox 360, DS, PSP).
Lifetime Sales Predictions
Switch: 151 million (was 73, then 96, then 113 million, then 125 million, then 144 million)
PS5: 115 million (was 105 million) Xbox Series S/X: 57 million (was 60 million, then 67 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
