CodeWeavers is contracted to work on Proton for Valve, and they are the main driving force behind it. I believe Valve only does triage for them. They're also co

CodeWeavers is contracted to work on Proton for Valve, and they are the main driving force behind it. I believe Valve only does triage for them. They're also contracting various other devs throughout the Linux desktop community to work on things like Mesa.