Linux on the Desktop = FAIL
Always has been, and will undoubtedly will remain so. I see no reason why, or even how this will change. (For the Desktop)...
But, lets look at integrated Devices, i.e. Set-Top Boxes (Cable & Satellite), Phones and Tablets as well as Data Storage Systems. Linux has always thrived well here. And none of these Applications would require a "Desktop" of sorts.
I have used various Linux Distros, Redhat, SuSe, Mandrake, Gentoo, Debian and Ubuntu to name a few.
The thing I always hated about Linux is that Once you spend enough time figuring out how to do things on on CLI you'd have to then relearn those incarnations for another System.
As a huge Fanboi of Klaus Schmidinger's VDR Project (http://linuxtv.org/vdrwiki/index.php/Main_Page), One of the major highlights of my life is when I need to either update to a newer (or change over to a different) Distro, and find that I then need to reconfigure that Distros' version of LIRC to work with my Remote. Or in the case that most of the newer Distros are finally moving to Ubuntu as a base. Find that LIRC has been superseded by something even more assinine, and compleatly fails to do it's job. Even as the Distro makes chime in as to how this would make Most Remotes work OoTB. Imagine my surprise when ~90% of the Buttons actually Worked, save the Blue, Menu, Exit and Info Buttons then DO NOT WORK!
But, then I'm still loathing the withdraw of the 60W Incandescent Light Bulbs as well
plus ça change I guess....
But Linux on the Desktop? Naghh it's never gonna happen, and unlike my Desktop loving friends here, I can't wait to see the back of 'em. What I wouldn't give to find a decent MoBo that actually still had a full complement (i.e. FIVE) 32-Bit PCI Slots on it. Good Luck tracking One of those down. Gaming belongs on the Consoles, and productivity can be done on a Notebok / Netbook or even Tablets or Phones. (although I'd like to see these Two pick up where Crapple left the Newton for this endevor though). The Desktop may very well still have a lot of life left in it, for those chores that Mobile Devices either can not or will not handle. But these are on the whole very limited in scope and those who'd cry the most about 'em will not still this tide.
The Desktop as we know it is dieing out, I wouldn't even it give it Ten Years time. before it falls off the map, and Windows 8 with it's touchy - Feelly Interface is a good a harbinger of this as any.
Pirate Flag Cause One of the great things about it (VDR), is You don't need a Skybox to record things, and as Linux is otherwise unrestricted you can actually record what you want when you want, and not what Sky (or others I'm thinking of HD+ here), would tell you, you could.