Ps4 Is sold out at Amazon right now. It was having stock issues during this week?
Also the console is entering its 5th year cycle and it's selling on par with the switch (which is the hot item right now.) @$299.99
A $199 slim/$299 Pro will boost the sales more.
Consoles seldom have their peak in their first year (mostly the failures do). PS4 just comes off of the peak year 2017 and is still very strong. Switch is still ramping up sales. So declaring Switch is the hot item right now is a little bit of bending the reality. I mean, it is not wrong, but PS4 is at least equally hot. And it reflects in the sales.