Ok let's look at the PC. Pretty much everyone has conformed to the same hardware formats. Every box has a motherboard, RAM, Hard Drive, etc. Even Apple has conformed to the de facto standard of the Computer.
Windows? There's a driver standard there. DirectX. and/or OpenGL. If Microsoft wasn't such a beotch, DirectX would be used across all platforms. It doesn't matter what kind of Videocard you have anymore-- as long as it conforms to DirectX then it should run fine.
So now can't videogames be different? There's nothing really special about the hardware of the Wii, Xbox or PS3. The way I see it, the only real difference is the button configuration. If all three console makers decided to agree on where buttons should go and some kind of universal dev kit, everything should be kosher.
Obviously the Wii has a crazy controller, but I can easily see Xbox and PS3 merging. Really its just A B X Y vs. square circle X and triangle, right?
