With how many Wii systems have been sold, how much software it has moved, and the relatively low development cost of Wii games I don't think there is much that would stop third party publishers from releasing conventional and unconventional games for the Wii ...
Even if every major "Hard-Core" title underperforms there will be third party publishers and developers who will continue to try to sell those kinds of games to the Wii's userbase. Certainly, if games like The Conduit, MadWorld and whatnot are successful there will (probably) be more titles but I don't think that large publishers will say "We've tried once and failed, we should never try again!"








