That is one of the reasons, for sure. The CMA, in its documents, actually highlighted this in great detail.Based on this graphic Microsoft are making a play for a network monopoly. While folk argue about which software they control and exclude, which submarket is dominated by whom etc, the real game is for Gamepass to be the dominant architecture for the future of gaming that all gaming brands (whether hardware or software makers) have to use just as Google has done with search or Amazon has done with online retail or Facebook has done with social media. The objective is to get as many active users on it as possible until it makes no sense for PS+ and NSO to exist in parallel.
That's what this acquisition is really about: positioning and power to engender a Gamepass dominated videogame market.