It was Nintendo's decision to make a platform with much closer graphical capabilities to last gen consoles than the other two current gen consoles. You get what you sign up for. The PS2 now at the end of it's lifecycle isn't getting great quality software and the Wii is basically sharing in that mediocrity. If the Wii would come out sooner, or the PS2 was more viable to develop for, we may have seen a Devil May Cry or other great series show up.
Overall the Wii has benefitted greatly from straying away from being capable to handle HD graphics. Without the Wii being where it's at now graphically, we wouldn't have had a Zelda game at launch and no Super Paper Mario. Games like No More Heroes and Zack and Wiki would have taken longer to develop. Resident Evil 4, Okami, Bully, Manhunt 2 and many others you could wave bye bye to. In fact, much of the Wii's gaming lineup wouldn't exist, and droughts rivaling the N64 gaming drought would probably put software sales far behind where they are now.
The PS2 should not die so the Wii can prosper, because that's too black and white. It wouldn't necessarily help the Wii out any. Who's to say the death of the PS2 would improve graphical capabilities? The precedents have been set, and Wii third party games can continue to look like crap with nobody batting an eyelash. The problem I see with PS2 ports is many are tailor made with a gaming controller in mind and not with the Wii's control functions. This hampers gameplay many times. Of course if the Wii was more powerful they would still have this problem, but with the HD ports. There's always a bit of sacrifice when someone tries to innovate. The PS3 tried to innovate a new way to program a game more efficiently, but has to deal with developers that are used to the norm, and the Wii's trying to innovate the gaming controller but developers are still used to the norm.








