Linux is not good. Some hardware support is still reverse-engineering-based, or based on a few individuals best effort activity. Linux needs manufacturers' first hand commitment to quality opensource to be truly good.

Linux is not good. Some software is not on feature-parity among operating systems. With Linux being the software kingdom poor Cinderella. Linux needs software feature parity to be truly good.

Linux is not good. Because too much mainstream new PCs comes with some other operating system pre-installed (and paid for) even if you won't need it. Linux needs freedom of choice sing first PC power on, like a stub to download whatever OS you want (to pay for) or to boot from removable media for Linux to become truly good.

Linux is not good. Because there is still "stuff" that require some specific non-linux software running under some specific non-linux operating system to be made useful things. We need manufacturers to ditch this for linux to become truly good.

I am a happy user of Linux on my primary PC since 20+ years now. But I still have to fight for my freedom every now and again because of one or more of the above points.

Now let's jump back to gaming.

Linux is not good because game industry thinks proprietary platforms and operating systems are better for their business. There is only 1 platform fully supporting Linux and too few titles. Gaming Linux hardly hits 5% of the market share, basically the same as Desktop Linux. While Server Linux is beyond 75%.

I think reasons could be two-fold.

On one hand, Linux is not perceived by industry as attractive as other proprietary platforms. Maybe industry can squeeze much more money from the latter.

On the other hand, it could be that most of the development resources are NOT ORIENTED towards gaming and desktop, so these markets simply lag behind.

Of course, I could be totally wrong: these are my humble opinions with some facts backing them.

Live Long, Linux!