It looks like Microsoft surprised us here, it seems like they are going to play their “trump card” and slap Windows 10 to the console, thus making it a multi paradigm and multipurpose console, not just a gaming machine but something more usable for other occasions.
Sony simply is in tight corner here, they would go perhaps and close some 5-10 good deals on exclusive titles but who knows if is going to give them boost over the entire ecosystem. They will have to come up with something here otherwise they will be left behind in full specs.
Also another thing to note is that unless someone is a benchmarker -or- a modder might see no actual reason to go for PC gaming. Actually the case is that console versions might run more smooth and have better feel (if not the top notch features) for the next 5 years or so. While someone who bought the Titan 1060 the previous year, now will go and buy the RTX (which is double the money spent).
The “bread-and-butter” of game development is “optimization” and not raw speed. Is about testing the game and make it fast with monkey patching. This is easy in consoles because there is only one hardware that runs the same game in the same way in hundreds of thousands of devices. However in PC gaming there is an infinite amount of combinations in hardware and software and driver versions, so the exact setup is never the same. There is no way a developer to know where the game lags and when, not having any idea or measured data about what to optimize and how. The solution is to expect that gamers will purchase every year new hardware rather than optimizing their code. Which means other users who like to upgrade all the time will do so, however others might find it ridiculous.
So we will have to wait a few months and see what is really going to happen.
Most importantly “Will It Blend?”