Wow, thanks for the positive feedback, all! I'll take it!
Gotta keep in mind that holiday 2020 is 3 holidays away. And yes, while PS4/Xone both had very strong years in the US in 2017, both have shown signs of already being at or past peak performance and have had to rely more heavily on price promotion to stay there. 2020 is the only real option I see, although I can imagine one may want to get the jump with a 2019 release, but I wouldn't think that prudent. Bigger question to me is what those new boxes will look like. Will both have physical media drives in all units, or will some come disc-less? Will both even really be traditional consoles as we've known them to date? What do the things like subscription services look like by then? How will net neutrality/ISP caps impact the games space in the coming years in between? Most importantly, how does Nintendo move the market over the next few years? Will it stay incremental and basically non-competitive with the PS4/Xone, or will Switch start to capture more of those dollars that would, in other gens, have gone exclusively to the more core boxes? Where's the PC in all this mess?
It's tough to see since we're all living it, but this is a moment of intense and rapid change in the gaming space. The next few years, and how the big companies react to these changes, will be fascinating to watch.
I also could be completely wrong lol.