Not gonna happen.
PS2 sold as much as it did in its later life due to factors like it being dirt cheap, releasing very late in a lot of developing markets, and PS3 stumbling out of the gate and so not quickly superseding it.
PS4 is in a totally different situation. Sony is showing no inclination to aggressively lower its price, its already been out in the developing markets for years, PS5 is unlikely to have PS3's struggles, and Sony have stated that they plan to move transition customers to PS5 faster than in previous generations.
All this suggests PS4 will not sell anywhere near as much after its replacement as PS2 did, and with PS5 likely less than 6 months away, another 45 million sales from here on out is simply out of reach.
I expect it will settle between 130 and 140 million lifetime; an extremely respectable total and the third highest selling system of all time. Better to celebrate this achievement than hold it to an impossible standard that will only lead to disappointment.Last edited by curl-6 - on 05 June 2020
Bet with Liquidlaser: I say PS5 and Xbox Series will sell more than 56 million combined by the end of 2023.