Clearly Xbox is still trying to integrate and learn hard lessons about managing its multitude of studios. They simply aren't at the level of Sony when it comes to predictability and consistency to pull it off.
Sony was able to time it with the last of us but that's the exception I'd say. Their Horizon show was probably supposed to be out alongside their remaster of the first game and Lego game, but yeah, that didn't quite work out. Similarly Concord's secret level episode will feel a bit off now that the game and its studio is shut down.
Ultimately, what do we want? Good media. If stars are aligned it's even better but if not, good media is forever good, and with Xbox they are still trying to figure out the good part.