This whole law suit doesnt even look to pertain to HL2 at all. But instead the way valve has been using Steam to distribute games Vivendi is still selling. The only way any of this will effect HL2 is if Valve decides to hold the game back until they get what they want, in which case Vivendi will probaly force them to release it.
All that aside, the whole deal with publishers being the problem with games is slightly off base. Sure they push for a lot of things that would be better off not done, but they also push for games to go out the door. A lot of companies wouldnt ever hit their release dates in a timely matter if it wernt for publishers holding their paychecks. Sure you can think that thats why games come out not done or buggy, or what not. But really you should look towards some of the developers as either not putting in the time, or not being as good as they should be. This isnt to lay blame on either side, because its differnt for every game, and probaly ends up being equal problems among both sides.
Now something that shouldnt be over looked, is that if a publisher loses a big development company like Valve, then they lose money. And by them losing money they are even less likely to take up that risky project. Publishers need big money makers to allow them to take these risks with small start up companies. What if they had decided to never take the risk with HL, the whole project could have gone down the tubes.
As for Online distribution, it may be the way some people perfer to buy games, but will never take the place of the actuall box sale. Reason being, that if a company wishes to sell both ways, they have to meet retails demands, and if you undercut the retail chains they arnt going to want to do buisness with you. So you are left with the dession of getting the box copy and any special deals they include with it, or download the game for the same price without getting anything but the game.