Valve and Vivendi Part Ways
IGN has news that the long running suit between Valve and Vivendi has finally been resolved. There has been some sort of settlement reached, the immediate result being that as of August 31st Vivendi will no longer be distributing Valve titles. From the article: "Valve has not announced a new publishing partner, or whether the company will now solely rely on Steam for distribution. A new publishing agreement would almost certainly be needed for the Xbox version of Half-Life 2 scheduled for release later this summer."
...distribution. These days it is possible for a developer to market their own title. Great leaps in manufacturing technology in this internet age have meant it is much cheaper to produce the physical media than it was in epochs past (early nineties), such as the CD, box, etc. What is barely possible for a newcomer is to break into the distribution channel.
Distributors are the ones that make sure boxes reach the shelves, at the right box width and height, at stores like Wal Mart, CompUSA, and Best Buy. Having the right distributors signed on is more important than having the right publisher.
As for a developer breaking into the distribution channel, I only know of one example: Id. Back when they were operating their own phone/mail order system for Doom, they offered up the shareware for free. I.e., they wanted no royalty take on the shareware copies that sold everywhere. Hence why you could find the shareware at anyplace that sold software, and some places that didn't (I remember a friend's picture from a convenience store in socal from that period, showing doom shareware up for sale next to the bubblegum).
Performing sanity checks on your own beliefs is vital in avoiding poisoned koolaid.
Because it is for X-Box, not PC. In order to release a title for a console system, complicated contracts and agreements must be made between the console maker and the publisher. You can't just press DVDs for X-Box and sell them. Not only would they not work, they would be illegal to sell. Valve would likely have a difficult time getting microsoft to allow them to self publish the game for X-Box.
This doesn't even consider the shelf space purchasing and advertising that is likely needed for a big budget release as this.
These are the sort of considerations that are killing the garage game industry; except for PC games, it is now almost impossible to distribute games without a publisher.