Spencer declared that Microsoft wants to bring it's players an experience across different platforms rather than just a gaming console..
Spencer said to Protocol
Google Stadia is already available as its own games streaming platform, while Amazon is rumoured for sometime in 2020.
Furthermore, Spencer shares that Microsoft is willing to work with Sony and Nintendo in order to support cross-player and cross-save.
Both, Microsoft and Sony will be releasing next-gen consoles - Xbox Series X and PS5 - by the end of the year. While Nintendo has confirmed there won't be an upgrade for the Switch in 2020.