Yeah, but Valve also doing all of this not just of goodwill, but as insurance in case Windows become full walled garden. Like it or not, but Epic working more or less the same direction.

Also Valve didnt start to use open source packaging software and haven't even made their own game engine source-available let alone open source. Yes it's nice they improving Linux graphics stack, but they also could do much more.

Like really I dont use Epic Games Store to buy anything neither I support the way they try to capture market share. But any attacks on locked down platforms is a good thing for FOSS.