@Squill: It's not just about M$. The patent infridgement suits can prevent the sales of everything that utilises the said technology, so there are third party publishers involved aswell. If they would get sued, all the third parties would either can or put their Natal projects on hold until the case was settled. If they would go into court, it would take years.
@OoSnap: With the PS2 installbase it's pretty meh. However, the camera controller is a red ocean product, whereas Nintendo wants to stay in the blue ocean. They have their own way of doing things, such as Balance Board and Vitality Sensor.
And to add to that, putting out a new controller would require them to focus their resources into making games that can sell the peripheral.
Notice that Nintendo haven't made its own microphone controller, even that the said market is bigger than the camera controller market (though, Wii Remote was originally planned to have mic).
Ei Kiinasti.
Eikä Japanisti.
Vaan pannaan jalalla koreasti.
Nintendo games sell only on Nintendo system.
