Setting aside business practicalities or priorities, the simple answer is that it's not technically easy to do this in any way. The custom hardware in the Xbox One will not enable it to automatically or easily become a traditional PC that runs the Windows Desktop OS.
Phil Spencer even answered something like this recently:
MSIX is not a runtime model which will magically enable apps and games to run on a brand new platform that they were never developed to run on.
Phil Spencer even answered something like this recently:
Not really. I'm not sure where this is coming from, but MSIX is a new packaging and installation model which enables developers to take apps and games which already run on a certain platform and package them up for installation and distribution in a different, open-source way.
MSIX is not a runtime model which will magically enable apps and games to run on a brand new platform that they were never developed to run on.