Why didn't Nintendo make more realistic, violent games for the Wii just to prove 3rd parties wrong?

[usrevenge]

bad controller imo. imagine playing GTA with the wii mote. or even the game cube controller. it would just be bad. also the wiis market is 5-13 year olds and 25-55 year olds for the most part.
the market for hardcore games is the opposite of what the majority wii marketshare happens to be.