Any games developed for it, will only work for about 3 months without needing constant patches against newer OS's bubblegum and bailing wire package management.
Wrong, I can still play Civilization, Call to Power(1999), Neverwinternights (2003), Doom 3 (2005) and other IDtech4 games, And yet It Moves(2009) on my current Gentoo/Linux installation. All these games haven't seem patches in ages.
If "Linux" wants to become a competitor to the PS4/Xbone, then throw all that GUI shit away and just have a thing bare-metal layer OS. NO GUI-wowzits. If someone wants to install a GUI later so they can also use their Steambox as a Multimedia PC, Office typing thingamigiggery, let them. But just please keep quit trying to be a desktop AND a game OS.
Guess what, "Linux" is exactly like this. Just install the latest GNU/Debian and you will have to explicitly select the GUI option. Besides, I don't really see why a GUI should be a problem. Most games open a window, often fullscreen, and then do all the drawing themselves, the only thing the GUI is doing is, drawing the windows frame if the game window is not fullscreen.
As it is, If I need Windows development, I use Windows, if I need Mac OS X, I have a Mac Mini to do iOS development. If I could just make a Universal Binary that also worked on Linux I'd sure as hell enable that. Just Linux itself never works.
Funny, I do all my primary development on Linux, and if I want to do cross-platform, the odd one out is usually MS Windows. Just getting all required libraries installed on Windows is a nightmare, because the only non-cygwin way to get a stable combination of libraries is to compile them all be yourself ensuring that you always use the same compiler flags.
Nobody in their right goddamn mind would use Linux as a Desktop, let alone a game PC except for people who enjoy "hacking" things to make them work.
No. I had two flatmates, one studying geology, the other working at a lawyers office, both preferred Ubuntu Linux, and they were certainly not "Hackers", they simply enjoyed an OS that worked on their Laptops without having to worry about the latest antivirus and with very simple means to get a lot of software for free with only a few clicks.
Joe-average-user just wants to put the Disc in the drive or click a menu and run the game, not fiddle with drivers, dependencies and GUI bullshit.
And Joe-average user can just do that: I bought two of the Humble Bundles and for all the games I actually cared to install I downloaded a bit TGZ, or SH file, unpacked it and the game just run. Doing the same thing with a CD/DVD should be no different. Even when I bought Civilization (call to power) in 1999 it worked by just popping a CD into the drive and installing on Linux.