Lol at people saying it is the market. Sony is heavily invested in UHD and HDR. It is why they have just released their first standalone this year. They have ads out promoting their UHD offerings, it is mind boggling to me that in order to watch a Sony pictures movie, on a Sony developed 4K UHD disc, on my Sony 4K X800D television that has a Pro hooked up, I have to use a Microsoft Xbox One S console.
Sony was just caught flatfooted and how you people don't see what a waste it was for Sony. The PS4 Pro will sell better in the long run than the Scorpio I think. That is potentially millions of 4k UHD owners they have lost. They won thr format war by having blu-ray in their consoles when hardly anyone had any blu-rays and people were saying Microsoft were smart to not have HD-DVD built in and what happened. Yes 4K streaming is inevitably the future. But I am almost certain for the next 5 years, no streaming or 4K service will come close to the quality of 4K and HDR you can get from a disc. The 4K content available right now is original Netflix shows, some Amazon video shows. The only place you can see things like The Revenant, Mad Max Fury Road, Arrival is with the disc whoch has HDR etc.
The Xbox One S has seen more sales solely as a UHD blu-ray player because of this as well. You can get it for under $200 and it will always be upgraded for the next few years with more title support, features and o/s updates etc. The quality between the Xbox one S, Samsung or Phillips standalones was negligible.