Actually, this is not exactly true.
There are articles that claim that PC Gaming is dying, but those articles are based purely on in store sales of PC Games. The fact is that PC Game Sales through online transactions such as Steam or Direct2Drive have increased sales by something like 300% over the last 5 years. In fact, I recently read an article on
Megagames that said that by the end of the year, Steam Games will sell more games on line then they do via retail store locations.
Think of the implications if PC Gaming died. Companies like Intel, AMD, NVIDIA, etc all have a very vested interest in seeing this doesn't happen. All this high end technology that's sold every day is sold for primarily one thing and that's Gaming. I can dig for some articles if you like, but the bottom line is that PC Gaming isn't going anywhere anytime soon. The only real truth to those articles is that WoW has inspired some companies to move more toward MMORPG style over the epic single player games of old. A trend I personally oppose, but that's another story.