No. I've said it before, I'll say it again. PS4 did so well because of the stupidity of Nintendo and Microsoft. Would the PS4 still have cracked around PS1 numbers if Nintendo and Microsoft were more competent? Yeah. But it would not reach 125-135 million like it's projected to right now.
If you include Switch with the PS4 market share, PS4 didn't hit 50%. But if you compare it against Xbox One, or Xbox One and Wii U then the PS4 did hit that. And if we compare the market share of Switch with the PS5 and Xbox Series X, that makes it near impossible for PS5 to hit 50% since Switch had over a 3.5 year headstart.
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
