As means to avoid paying for Windows licenses.

All the games that matter are Windows games running via Proton, as Valve has failed to actually build a GNU/Linux native games ecosystem, in spite of UNIX/POSIX underpinnings of Android NDK, PlayStation, the studios hardly bother.

The day Microsoft actually decides to challenge Proton, or do a netbooks move on handhelds with XBox OS/Windows, the SteamDeck will lose, just like the netboooks did.

Additionally, it is anyone's guess what will happen to Valve when Gabe steps down.