In a recent interview with Variety, the director of Resident Evil 4, Shinji Mikami, shed some light on Capcom's deal with Nintendo about making the game a GameCube exclusive. He stated the following information:
At the time, I was thinking, ‘Well, Nintendo might be the only one left in the future that would have games for people – not just children, but also adults.’ That was the thinking at that time. And so I was wrong completely. That was the thinking at that time.
I do remember the chairman of Capcom, Tsujimoto Kenzo-san, called me in and asked me, ‘Are we really not going to release on other platforms?'” he says. “And I had to say, ‘Well, if you want to do that, you can do that, but you have to fire me first.'