More people playing on Linux may bring the interest of developers to create a Linux version for their games. More developers familiarizing or liking Linux may mean more native Linux versions. This way there is no need to use wine/proton middle-man software. Proton may work wonderful but there’s still the fact that there is a middle-man software, and will never be as optimize it can be. Games often have bugs and are release unfinished, imagine bringing more things in between, more points of breaking.
On the other hand Linux is known for breaking compatibility with old games and putting a layer like WINE in-between can make games work as intended even long after a non-maintained native version broke. In fact WINE often runs old Windows games better than even newer version of Windows itself.
Linux is known for breaking compatibility with old games
Which ones exactly? I recently played the DOOM 3 Linux version and it worked after swapping out LibGL. If you ship Linux game with the Steam or a flatpak runtime they’ll probably run in 10 years still. Whereas you might already run into problems updating Windows 10 to 11…