There will be no shift in sales. If anything, Xbox is gonna regress further.If one is paying attention to history and trends, yes they would.
Which then begs the question — why are we seeing pushback from the likes of people like you? Considering you posted a laugh emoji, have you got any reason to believe they would do anything else? Exactly what kind of market would buy an Xbox branded PC with "high-end" specs that would lead to an influx of haters?
Playstation will cater to mainstream and large chunk of hardcore users. That means it will need to be affordable.
I can imagine PS6 being $499 while nextbox will be $999.
Which would simply mean ….. there will be no competition in quality of devices they will be.