Hardly mainstream
I believe the answer is:
niche
(Other definitions for niche that I've seen before include "A small recess or easy job" , "Small corner of e.g. market" , "small specialised market" , "Comfortable position" , "Special location" .)
I believe the answer is:
niche
(Other definitions for niche that I've seen before include "A small recess or easy job" , "Small corner of e.g. market" , "small specialised market" , "Comfortable position" , "Special location" .)