PC gaming is in no way dying. I don't want to get into an argument over consoles but you only have to look at the capabilities of each platform to see that the 360 is the weakest of the three.
Maybe in terms of tech yes, but tech does not equal sales. For any multi platform game the 360 shifts the most units and the PC the least (well normally) unless it is released on the wii
I'm sorry but you only have to look at the quality and ammount of PC games released over time, 10 years ago there where hundreds of quality games on PC now there are no more than a handfull each year. I have all three platforms with a PC that can run Skyrim on Ultra, I have copy on both Xbox and PC, the PC copy has had maybe an hour the the 360 upwards of 30 hours.
Don't get me wrong it will be a sad day when PC gaming falls by the wayside but make no mistake that day is coming. Look at the Skyrim UI its a mess probably because it was not cost effective to spend time on it knowing how few units they would shift for the PC its only a short hop to lets not bother with a PC version its not worth the cost to develop/port.