You've basically revealed yourself as a moron who doesn't know what he's talking about but thinks he knows better than everyone else anyways.

SteamOS is an OS designed not just for gaming, but for a specific subset of gaming - using a controller and television instead of a mouse, keyboard, and monitor. The UI needs to be significantly different. You know how everyone bitches whenever an OS tries to reinvent the UI so that it works on both tablets and computers? This could have been the same situation, but Valve was smart enough to realize "hey, nobody wants to use a 10-foot UI on a 23" monitor, and nobody wants to type with a controller when they have a keyboard. Instead of pissing off our existing users *and* alienating the new target audience by making a compromise that fails at both, let's have two completely separate modes".

That's what SteamOS is designed for - a difference user interaction method. Or to be more precise, that's what Big Picture Mode (the Steam mode that SteamOS boots to) is. Big Picture Mode can be enabled as the default on any Steam install (Windows, OS X or Linux), and it's relatively simple to get Steam to launch by default as well.

However, SteamOS includes more than just a few default UI settings. There's the incredibly simple installation script - it offers very little customization, but it requires almost zero knowledge outside "getting your computer to boot off media instead of primary disk". That's essential for this particular niche, but would you want Debian dumbed down like that?

Or the stripping of unneeded crap. As I read TFA, I learned they built a rather customized compositor focused on game performance. Doesn't work too well in windowed mode, but it works well for fullscreen with UI overlays. Does that sound like something Debian ought to use?

Same for their kernel tweaks (some realtime scheduling stuff and disabling things that caused bugs with games), or their stripped-down install, or the dozens of other changes people are still trying to find.

But here's the thing - they are making almost all of this available as patches. It's open-source, except for Steam itself and the improved proprietary drivers. If Debian sees a use for these changes, they can merge it in. But to counter your inevitable repetition of "just make it a patch shit-gargler", you need to look at Valve's logic.

They saw Windows 8, and they were afraid. They realized that as long as PC gaming was reliant on one company (Microsoft) for an essential component, and that company has not just apathy towards PC gaming, but an outright reason to try to kill it in favor of their higher-profit-margin console, no matter how well Valve did at making games or keeping Steam running, their business could be destroyed. And with the Metro stuff and the locked-down app store, they saw a direct death threat. Shortly afterward, they started pushing their Mac port harder, and started work on the Linux port.

Given that history, would you really expect them to make themselves reliant on someone else for their console? Their thinking is basically "if we control our own OS, even if every other OS maker turns hostile to our market segment we can still keep it running". They have no problem with people running Steam on Windows or Ubuntu or Debian or fucking Slackware for all they care - but they want to make sure that there's at least one OS that will *always* be there to play games on. Hell, they even recommend Ubuntu+Steam for the old desktop experience, not SteamOS. Nobody is going to be rebooting into SteamOS - they'll be running it as the only OS on the machine because it's the only one that's usable on that machine's setup.

But everything I just said was kind of pointless, because you don't understand the very issue you're bitching about. Fragmentation on Android is a problem because programs that use new features do not work on old versions. Fragmentation of window systems or other APIs is bad because you have to write a new version for each system. And desktop Linux dislikes f