I don't consider PC gaming to be a niche, How many millions play League of Legends? World of WarCraft? Heck, the origional StarCraft sold at-least 10 million copies thanks to being a massive sport in South Korea.
Hell even casual gaming on the PC dwarfs that of the consoles, think of how many 10's of millions of people play those flash-based facebook games or the fact that the Sims franchise has passed 125 million sales.
Even Steam has well over 50 million accounts now, which is very competitive to the Xbox/360, Origin has about 30 million, Uplay... Who knows... The point is, PC gaming is bigger than what people think.
Besides, without the PC, consoles would never be as powerfull as the Xbox or the PS3 or these new machines coming out, it's all thanks to the innovation and constant evolution in graphics that the PC has done for the last several decades.
WHAT is a niche however is the Enthusiast PC gamer, you know... Those who spend un-told thousands to get the best possible performance and graphics, no holds barred.
--::{PC Gaming Master Race}::--
