Here's something I just noticed looking at one of Microsoft's sites:
In compliance with the Korean Fair Trade Commission Order, Microsoft will produce for distribution in the Republic of Korea new versions of Microsoft Windows XP Home Edition and Windows XP Professional. The new versions containing “KN” in the name will not include Windows Media Player or Windows Messenger. Note that computer manufacturers may pre-install third-party media players or instant messaging software on computers running these new versions of Windows XP. Korean consumers may also separately install media players or instant messengers, either from Microsoft or a third party. The new versions containing “K” in the name will include links to Web sites containing links to software downloads to third-party media player and instant messaging software and will also be available to Korean consumers.
How is there anything "fair" in this "Fair Trade Commission" order?

Commissions like this are supposed to act in the best interest of the widest population they serve - which is the consumers.

How exactly is the consumer served by this ruling?

What this ruling does is disadvantage the consumer by prohibiting Microsoft from providing a service (seamless media and OS integration) that it is in a unique position to provide. So this service is not provided, benefitting no one but the vendors providing their own media players and messengers.

Imagine for a moment that there was this car company, let's say GM, that provided cars with no stereo. If you wanted to listen to music in one of their cars, you'd have to buy a car stereo from one of a number of manufacturers. A healthy market of car stereos for GM cars would thrive.

Then, one day, GM would decide that the consumer would be better served if their cars already came with a stereo. The stereo would be free, and it would be a standard one that the owner could freely replace with any other one if she so chooses. But for those people who can't be bothered to worry about the stereo, one would already be there for them.

Suppose the stereo manufacturers made a furore about how this is going to destroy their business, and complained to the government that it must interfere. The government would step in and order GM to not include a stereo in their cars, or else they'll face stiff fines, or worse.

That's exactly what's happening with Microsoft. This isn't governments preventing a monopoly. It's just governments preventing the markets from working properly - shifting the playing field in somebody's favor.

How about Linux distributions that all come with SSH software already installed. Our company makes SSH software for Windows, but suppose that we made it for Linux. Perhaps then we should complain to an antitrust body that those Linux distros are all ruining our business by freely bundling OpenSSH?