I doubt this. Microsoft has spent last years integrating PC gaming under XBOX brand too. E.g. XBOX Game Pass for PC, or adding controller support etc.
They even promote so called "Xbox Play Anywhere", and tried to make it normal for the new XBOX so that you can buy a single game and play it on PC and XBOX. However the gaming studios haven't yet to my knowledge approved it fully so they want to sell you the game twice.
I would hope this would not be the case - in the past few years Microsoft have gone out of their way to build bridges with the PC gaming community, bringing their traditional first party titles (Forza, Halo, etc) to PC.
With Fallout and The Elder Scrolls’ history as PC only titles in their early iterations I would suspect this bridge building will continue
