Well Silent Hill Shattered Memories is a great example right there. It's for the PSP as well as the Wii, yet who would want the PSP version over the Wii version?
If Konami can put Silent Hill: Shattered Memories on both Wii and PSP, there's no reason Metal Gear Solid: Peace Walker can't get the same treatment.
Again I think if Monster Hunter 3 (Capcom) is a big hit for the Wii, Konami will reconsider because they'll feel more confident with the Wii platform with more core style games and they may want to get in on that also.
To be fair to Konami I do see probably what is part of their arguement -- there isn't a great track record of core games selling great on the Wii. If Monster Hunter 3 can start to change that perception and/or Silent Hill sells reasonably well ... I think MGS: Peace Walker will come to Wii.
