Well on the way to being the biggest third-party publisher in the market, I guess, but this industry's going to go to dark places without competition.
And less platform competition is so bad. I just don't understand why anyone thinks this is good for the industry or for gamers. I can't believe they didn't even try to compete with all of their talent and IP, they just fucking gave up.
This place has always had a very folksy idea of the curative/preventative properties of competition.
The industry has gone to plenty of dark places with plenty of competition in place. In fact many dark places have been visited by this industry expressly BECAUSE of competition. Lots of games sniped as exclusives, oftentimes left to now forgotten platforms that didn't have lasting power. Developers bought to further secure IP/talent only to be grossly mismanaged and subsequently laid off and disbanded. Competition didn't do shit to stave off a banner year of layoffs across the industry this past year. Etc. I don't think there's a scary boogey man that gamers claim competition wards off that has actually been successfully warded.
There's also still plenty of distinct platform competitors if Xbox does bow out. The gaming industry has evolved well beyond the traditional bespoke consoles and PC at this point with consoles, PC, Nintendo going with a "hybrid" approach, mobile platforms, cloud streaming, VR/MR, etc.