This isn't an entirely new idea. Eve Online had an officially supported Linux 'port' for a while until they dropped it because of low adoption rates. They 'ported to Linux' simply by licensing and bundling Cedega, and officially supporting the resulting package [0]. Not an unreasonable thing to do.

I wonder how much Vulkan will help here. I presume many devs will target Direct3D 12 instead, simply because of the Xbox One.

Somewhat related: slides from Valve about porting their Source engine from Windows to Linux [1].

[0] https://www.eveonline.com/article/an-update-on-linux-support [1] https://developer.nvidia.com/sites/default/files/akamai/game...