Earlier quoted context omitted.
I think this is really unlikely. PC gaming is an increasingly important market for Windows in the consumer space. As more casual users abandon conventional PCs for increasingly capable tablets and smartphones, PC gaming is only becoming and even bigger piece of the pie. The day Microsoft announces that the next version of Windows will be wholly incompatible with player's existing libraries is the day Windows ceases t…
The ace in the hole is TPM. What happens when Microsoft starts shipping a TPM based anticheat and DRM? That would destroy Proton forever and allow them to lockdown Windows.
For that, you have Valve stepping in and working with anti-cheat companies to find some middleground for Linux: https://techraptor.net/gaming/news/valve-making-linux-anti-c...