Chicken and egg problem.
Valve is making enough headway that game makers take Linux seriously. We’ll likely see a lot more native releases over time. (once the worry about anticheat subsides).
When it comes to games, Linux has an OS/2 problem.
If Steam Deck, the new Steam Machine etc take a significant part of market share, I think it will be more enticing for game developer to release a native version for Linux. Providing a native version should still be more robust and performant.
Why? The only stable ABI on Linux is Win32.
He doesn't really want to care but Microsoft's decisions have made their main product into an annoyance.
There is a new game with no support? So sorry. Can't be done