Should PC Exclusive Titles Still Exists?

The editors at GamerLive ask themselves the titular question in an article piece where, taking as an example the newly released The Witcher 2: Assassins of Kings, they end up arguing that at this point in time platform-specific exclusives are absurd. Here's a sampling:
Now that many of the functions between both platforms are pretty close to each other, there doesn't seem to be much reason to keep games away from consoles. It's true that not having a keyboard does affect the flow of the game and you can't host your own servers, but the console experience is still very much worth having. Consoles continue to put out excellent graphics and the market for online gaming continues to expand as many new games incorporate multiplayer in some fashion. Not to mention, home consoles have brought in motion controls and 3D gaming to the fold, adding a new wrinkle in how games are played today.

I would say that I believe the opposite should also hold true, that console games shouldn't keep games away from PCs. Exclusion of any form only ends up hindering the potential for a game's success, leaving certain audiences frustrated. Yes, making games for both platforms increases the overall cost, but the payoff can be much greater if the developers strike gold in their IP. PCs can use controllers just as much as consoles can, so why keep them out of the mix?

One other thing to note is that video game consoles are built primarily for video games, while PCs have plenty of other functions such as being used for work. If games aren't exclusive to PCs, that won't matter a ton to them because they still can profit for the functionality they have outside of gaming. The same can't be said for video game consoles. Who would want to buy a PS3 just for the Blu-Ray?