https://wccftech.com/spencer-crossplay-buy-save-battle-isnt-won-yet-id-love-to-revive-mechassault-at-some-point/

Phil Spencer participated in a hour-long podcast with IGN Unlocked (Episode 437), where the head of gaming at Microsoft delved into a great number of topics, such as the Xbox Series X price, the inevitable comparison with the PlayStation 5 tech reveal, and much more.

For instance, on the increasing spread of features like crossplay, cross buy and cross save, Spencer commented that the battle isn't won yet as these features (which Microsoft believes should be mandatory in the year 2020) haven't been implemented in all games so far.