https://www.gamespot.com/articles/xbox-one-report-card-2017-year-in-review/1100-6455366/

Xbox One is now four years old, and its fourth year on the market felt both unsurprising and encouraging. It's difficult to know exactly how the system performed commercially because Microsoft has stopped sharing sales numbers, but Xbox boss Phil Spencer has made it clear that, for him and Microsoft, success is no longer gauged by Xbox One hardware sales. Microsoft has broadened its gaming aspirations, but in many ways, it's doubled down on its recent, user-friendly strategies with Xbox One, which has been promising.