By using this site, you agree to our Privacy Policy and our Terms of Use. Close
Grimes said:

It's possible that a patent prevents them from releasing it.

I also believe it could be this. If Sony copied the Wii-Nunchuk they would probably get sued.

It already happened. With wireless nunchuks. Here is a link:

http://www.qj.net/qjnet/wii/nintendo-sues-nyko-over-kama-wireless-nunchuks.html