

why doesnt valve demand devs make linux builds?
You mean games aren’t listed on Steam unless a Linux build is provided? I know Steam has a de-facto monopoly on PC gaming, but I’m afraid studios would just quit the PC market (or move to another PC store) if Valve were to enforce such a rule.
if microsoft changed their apis wouldnt new games just not work on proton?
It’s very unlikely Microsoft would introduce such breaking changes in their APIs. And even if they did, well yes, it would until Proton maintainers add support for these new APIs.



























Exactly. Thanks for pointing that out, I lacked the time to mention it in my answer.