2020 surpasses 3m YTD in week 30, a bar that 2019 didn't clear until week 46. If 2020 is flat from here on out, it will finish with sales of ~5.85m; that's more than half of what the PS4 sold lifetime in a single year.
As for current PS4 sales, that looks more like Sony not caring one bit about the supply chain than anything else. If there were no supply constraints, then the PS4 could sell 6-10k units per week, but such a baseline doesn't add up to anything significant over the course of a few months (~50k extra units), so that's why it likely wasn't worth an effort on Sony's part.
If we scale sales proportionally to last year, switch could very well sell 8mil+ and the funny thing is the only thing stopping it is how many units Ninty can produce
Just a guy who doesn't want to be bored. Also