First lets get Linux on computer stores so that normies actually care it exists, outside Android, ChromeOS and WebOS powered devices.

Most gamers are still on Windows, I expect it to be the case for quite a while, even though Linux support is improving.

Bringing an open source driver to the most popular platform is a way to get more contributors interested, which in turn may help the Linux driver.

It won't die as long as it keeps coming preinstalled with new PCs, and included in their price.

Say that to the 95% of people using Windows to play PC games.