I think the interesting point here is that until relatively recently, Larian was part of the niche market, but now they are suddenly in the big league.
I'd say yes and no. They don't have a "hardcore old-school" cRPG in their portfolio. They've gone through Diablo-likes, TPP action RPG, bizzarre RPG-RTS hybrid... Original Sin games are cRPGs, but from what I understand, they are very modern and casual-friendly. Their success is probably the combination of cRPG fans getting
something and Larian bringing a new genre to a broader audience. They weren't big league before that breakthrough, but I wouldn't call them "niche" at any point (depending on one's definition of niche).
