Currently Online 
Sony seems to want to support the PS4 immensely in software (hence God of War and GT 7 being cross-gen), but doesn't want to keep making the consoles much at all to provide a more entry-level PlayStation experience. I get it, they need to focus on making PS5 consoles. But I think they're missing a golden opportunity to not make more PS4 Slims than they are.
It would partially impact PS5 production, but I think PS4 could've reached 130 million if Sony made enough of them (and a price cut). I think some consumers would jump for a $200 or $250 PlayStation.
I think it's going to slightly outsell the GB+GBC, and might hit 120 million. We don't know how many Sony is still going to make and ship. I think there's at least 3 or so million left to sell though.
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
