Christian Svensson, Sr. Director of Strategic Planning & Research at Capcom has commented that they are not making many 'mature' titles for the Wii. He does not believe the Wii will have a big audience beyond the early adopters and if a 'core base' develops, it will consist largely of younger players.
"By and large, I don't see the Wii being home to a sizeable mature playerbase outside of some of the early adopters. I see it as being very, very broad with a family focus. If there is a "core player base" on Wii (and it's might be so broad, there might be no such thing as "core"), within two years, it will probably be largely a younger player (or at least younger than 360 or PS3)."