To add on this: Valve works with upstream developers on upstream code, so their work benefits the whole FOSS ecosystem. They are funding a lot of kernel, Mesa, Wayland, Wine and KDE developers.
(Disclaimer: I'm a Valve contractor.)
(Disclaimer: I'm a Valve contractor.)
Extra well wishes if you work on the general kernel improvements or KDE tech, that stuff has made my life more enjoyable for close to 20 years or so.
At this point, streaming to Twitch from my Sway desktop is working really well (thanks for that @emersion!), with the one frustrating exception of not being able to screen-capture individual windows.