PS4 Hardware Sales 2015 vs 2016 vs 2017: New Years numbers posted. 2017 ends at 20.2 million

[PAOerfulone]

SKMBlake said:

JRPGfan said:

120m doesnt seem that unrealistic to me.

March 2018 it should be ~78m sold through (I expect them to beat their forecast).

and Imagine thats another year around 18m? Suddenly your not that far from the 100m mark.

Yeah, but PS2 numbers ? I don't think it's going to happen, back then the PS2 was alone. Today, XBOX is still fighting with the release of the Xbox One X and the Switch has blockbuster success and still has sto struggle with shortages. Today, there is less reasons to buy a PS4 than before, it's not the most powerful console anymore (XBOX took that title), their exclusives are good but nos as Nintendo's hugely praised games which are about to be released, and it's not even the cheapest one (yet).

I always been a Sony fanboy (my first console was a PS1, and the first console I bought with my own money was the PS3, I only use Sony Xperia phones, have a Sony TV and even bought the PS TV) but when I had to choose between the PS4 and the Switch, the choice was obvious (at least, for me).

While I agree that it won't reach PS2 numbers. It doesn't really need to. 120-130 is more than realistic for the PS4. 
As far as the argument with the Xbox One and Switch go. 

The Xbox One X is no threat whatsoever to Sony. Power isn't everything and it's not nearly as big of a deal as people claim it is, if it was, everyone or the vast majority of the gaming audience, both casual and dedicated, would have a gaming PC and most of the profits and revenues for gaming would come from that.
And that $500 price tag was a shot in the foot, just like it was when the Xbox One launched in 2013 against a $400 PS4, and now a $400 PS4 Pro that could very likely drop to $350 in the near future. 
Right now, Microsoft's Xbox division is just trying to stay alive and make the most out of the situation they put themselves in and hope to start fresh with their next system.

As for the Switch. 
I do believe that the Switch will ultimately be the one that dethrones the PS4, the signs are already there. This is the PS4's peak year thus far, and yet, it's been going back and forth with the Switch, which just launched and still has a rather limited library, especially compared to the PS4 right now. And as soon as Pokemon drops, that'll be all she wrote for the PS4's reign on top.
The Switch's time will come, but not now. 

And I especially disagree with the point that there's less of a reason to buy a PS4 than before.
It has garnered an incredible library, with plenty still to come. There's a reason most people on this thread believe 2018 will be the peak year. 
Add that to the fact that they can still do various price drops, the PS4 has plenty of juice left and there are more than plenty of reasons to buy a PS4 now and later in the future.