That was a different time, a time before the gaming industry became main stream. Now gaming is a huge portion of the computer world. The gaming industry drives the computer industry as much if not more than any other computer software industry. So unless a lot of the office productivity (Music & Movies included) start making their software for Linux, it is going to be the gaming industry that is going to have to pull Linux out of the niche market. Quite frankly I don't see that happening for a while yet, not with Linux holding such a small percentage of the OS market share.
BTW can you watch store bought DVD movies on a Linux PC legally yet??
I haven't had any problems with playing store bought DVD movies on Linux.
There's already a lot of Linux software for office productivity; audio and video editing and playback; CD and DVD ripping, creating, and burning (legally); 2D and 3D graphics programs; and many other powerful pieces of software that come pre-installed on many Linux distributions (distros). The best part about it is that these programs are open source and free.
In my recent experience, it's a hell of a lot quicker and easier to set up a Linux computer where you have everything that you need installed and working properly than it is to do the same with a Windows computer.
When installing Windows XP from scratch (which you probably paid at least $90 for), you have to immediately install Service Pack 2 (assuming you don't have it included with your Windows CD, which most people don't), install an antivirus program, and then go through countless updates and restarts before you can really do anything else. Even then, you shouldn't even be connected to the internet until you've installed Service Pack 2 and an antivirus program unless you like the idea of catching virii during the first few minutes of using your computer. Then you have to install your office software (I sure hope you didn't have to pay full price for MS Office) and any other software yo want to use like Photoshop or something similar, 3ds max (for 3D modelers and animators like me) Nero or something similar, audio and video editing software, IM clients, games, and any other miscellaneous pieces of software you might need. All of this will probably cost you hundreds, maybe even a few thousand dollars.
When installing Linux, you just go through the installation process (which will vary in difficulty from distro to distro, but most of them are just as easy, if not easier to install than Windows) and update ONCE (some distros let you do this at the end of the installation) and you're ready to go. The distro you chose probably already has everything you need already installed and ready to use. Open Office (MS Office alternative), GIMP (Photoshop alternative), Blender (a very good 3D graphics program), a complete set of multimedia tools, K3B (a CD and DVD burning program), IM clients that can use multiple protocols (anyone like to use MSN and AIM without having to run two separate clients?), and several other usefull programs are already there waiting for you to use and you didn't have to pay a dime for any of it (unless you decided to get a distro that isn't offered for free).
The hardest thing about installing Linux is choosing which distro to install. You need to do a little research, but you shouldn't have any trouble finding one that suits your needs and caters to your level of Linux expertise or lack thereof. Some popular distros that are very user-friendly are Ubuntu, Linspire, Mandriva, SuSe, and Xandros. Also, there are several Live CD versions of Linux. You can download a Live CD image, burn it to a CD, and restart your computer with the CD in the CD-ROM drive and your computer should boot up into Linux straight from the CD. This is a great way to try out Linux without having to install anything. Some very good Live CD's are Knoppix, Slax, MEPIS, and Ubuntu. If you have absolutely no idea where to start, then go to this site
http://distrowatch.com/.
Linux does lag behind Windows in games, but that's simply because the major gaming companies choose not to make Linux versions of their games. There are, however, many people who develop open source games for Linux and some people are working on making Windows games run on Linux. Cedega is a program based on Wine that will allow most games made for Windows (including the SFC games) to run on Linux (it's not free, though). Also, some games have versions that run natively in Linux, like Doom III, Quake III, Neverwinter Nights, and several others.