A lot can be said about the proprietary and closed nature of Steam. But for a while, and even more in recent year, Valve has truly contributed in a good faith manner to free softwares and the linux community. Sure, it's to serve they own interest in selling Steam-branded hardware, but they probably could have gone the easier route that a lot of vendor ends up to where they contribute the minimum and keep a lot of things proprietary (making things like hdmi 2.1 support easier).

> Sure, it's to serve they own interest in selling Steam-branded hardware

But that's fine, even preferable? I love it when my interests and someone else's interests naturally align themselves.