PC gamers brought this onto themselves.
There is only one major reason for game industry moving away from the PC market and towards the consoles. Piracy. I've read somewhere almost 90% of games for PC's are being pirated. So what there are more PC's out there than consoles, when the companies can't make money on their games, because people copy them instead of buying them.
On the other hand, piracy is much less common on consoles, especially the new generation - and virtually non-existent for PS3 (their encryption scheme has yet to be hacked, despite almost 2 years on the market).
I was always a big PC fan. I kept building/upgrading mine at home with latest hardware for over a decade. I hated consoles as an inferior, overpriced machine. It all changed when I got a PS3 almost a year ago. I bought it because I knew Blue-Ray is going to take over sooner or later, and didn't care that much about games.
But soon enough, I realized that a console has many advantages to a computer, especially as far as Multiplayer games are concerned. First of all - I can play everything on my big-screen, and not have to worry about resolution compatibility, or keeping my PC rig next to the TV. The whole GUI is much sleeker too, and fits more with the whole home-theater theme. And I can play while laying down on my couch, instead of sitting at the desk.
Finally - exclusive titles, like Uncharted, Grand Tourismo, Eye of Judgment, GTA4, can only be found on a console, and not PC.
I believe that is the direction the market will be heading in. You can see how much money is being made on console games. At the very best PC users can expect mediocre ports a year or two later, if that. Sure PC's still have the edge as far as strategy games go - but for how long? I already have a wireless keyboard, with a touchpad for my PS3. I'm glad my favorite game (Civ), is making it onto my favorite system. Hopefully more will follow.
I really don't know why people say this. It has been said for years that the gaming industry is moving away from PC and into consoles. This is simply not the case. We have major titles hitting the PC lately. Just wait, just wait until SPORE is released not to mention the Sims 3. Also, ever heard of a company called Stardock? Those exclusive titles you mention, I personally don't have any interest in them. Then the PC exclusive titles are much stronger. Console games are like fast food. They are there for a quick gaming session and they have very short shelf life. This is why the gamestops and other local video game stores have tons of pre-owned console games. This is because they have about a week of gameplay in each game then the game is basically beat and brought to the store for a trade in. The PC literally has YEARS of life in many games, Civ4 being one of them. I can play Civ4 for years not to mention galciv2 and others like it. Serious gamers are not going anywhere and as long as we are here, there will be tons of new PC games. This all said, I am very happy to see a version of Civ coming to the consoles. Maybe it will create a new crowd for strategy games with consoles instead of first person shooters.