X100 - Market Niche?
It's the OVF dude.
There is NO OTHER camera out there with a usable OVF (bar the Leica M9).
Many many people lust for such a camera. But these people do not belong to the mainstream. So it is a niche camera with a healthy fanbase and no competition.
and the lens. The lens on this camera is going to rock the mirrorless world. Fuji cameras with fixed lenses have always been phenomenal performers. More than good, better than great, phenomenal .