Counterpoint: Valve had to fork Wine and create Proton to be able to run vidya on Linux because the Wine team is that fucking lazy and incompetent at creating a Win32 compatibility layer. So, if anything, Valve will get Proton to a point where it perfectly runs any Win32 based software under a compatibility layer, not the lazy niggers at WineHQ that couldn't do what Valve did in 5 years.
Nadella's Microsoft coasts on work done by his predecessors, Wine is a classic ego circlejerk FOSS project that doesn't go anywhere, and Valve is the only corporation in the game that has a financial incentive to create software that works and is contributing to open source in the process. If you follow shit like the Open Source Software Community Watch thread you know that FOSS wouldn't get anywhere without tard wranglers, and corpos are those tard wranglers. The FOSS "community" utterly despises writing good code and only cares about stroking their egos while sitting on their thumbs, and the handful that does care about writing good software, the entire fucking point of FOSS, is constantly attacked and demoralized to not let their work improve the Linux ecosystem. See Vaxry creating a Wayland TWM that doesn't suck ass or Valve getting attacked for contributing to Arch and supporting the Frog Protocols project that aims to un-fuck Wayland.