Erm no and far beyond being right. If you havnt notice 4k has already hit off. The Scorpio would have been planned years ago not as a last minute decision. MS had another console that was due last year which is more like the PS4 Pro which they scrapped due to it being a silly idea going half way with specs. MS is a PC company which houses heaps of 4k content. They know whats going on.

As for thinking this is to only 1 up Sony.. thats the problem with this industry and its fans. ALL companies are trying to 1 up each other, not just MS. These consoles take years of planning and reserach. There not just  (lets quickly rush a system to be more powerful).

MS most likely dont care what Sony do. There aiming for the 4k market something the PS4 Pro failed to do.

Or you can wait another year for an XB2 which will most likely be more powerful than the PS5 since its likely to release later. It never ends. Atleast Scorpio is the perfect start for 4k gamers with 4k Screens. And will be cheaper than the PS5 and will be BC which PS5 probably wont be. 

MS jumped the gun. Scorpio will be $599 and not get much 3rd party support since it wont sell very well due to its price. Sony is able to offer 4K gaming at $399 and will drop the price of the Pro the moment Scorpio drops. SOny is in the best position right now with the PS4, it extended its lifecycle by releasing the Pro and will release the PS5 in 2019 with much better tech using AMDs new Ryzen architecture and have a fresh start console. The Project scorpio will be able to drop price to compete however Sony will have the technology edge again. 

* The Pro isn't selling like hotcakes either.
* Scorpio and the Pro don't need to compete in price, they are not high-volume hardware. They are Halo products to draw attention to the platform as a whole, the bulk of the sales will continue to be the Xbox One S and Playstation 4 Slim which will continue to be price competitive.

https://www.vg247.com/2017/02/03/ps4-pro-sales-are-stronger-than-that-of-ps4-slim-says-sony-cfo/

It's a few months old, but it seems to indicate otherwise.

Did you read the whole link? Translation error most likely, especially in the context of what they were talking about.
Pro beat its sales expectations more than slim's sales expectations is likely what was meant.

http://www.playstationlifestyle.net/2017/01/19/report-ps4-pro-sold-238000-units-us-last-month/
That indicates about 15% of total sales were for the pro, about 10% in Japan.

Yea, that's why the Scorpio isn't changing much.  If you look at sales, interest in the XBO at $249 has started to drop, even in the US.  Having a $400-$500 version with prettier graphics isn't going to help much.  Especially since it'll only appeal to people in a handful of regions to begin with.

And while it's not the biggest reason to switch/stay, I think Sony coming up with a better trophy system is going to help.  I mean the gamerscore just seems outdated, like keeping score in Atari games.  It sure wasn't enough to keep people with Xbox, like some thought it might.  Having it work more like leveling up in a RPG just seems more interesting to me.  Again, I don't think it'll be a big reason, but I think it'll part of the reason people stay with PS this and next gen.

Im sure MS is banking hard on people doing just what you described.