With Sony’s PlayStation 3 finally launched across the globe, the next-gen videogames wars can start in earnest. Microsoft already has a reasonable installed base for Xbox 360, but not enough to guarantee dominance, while Sony’s consumers’ brand loyalty is being tested to the limits by the PS3’s high price point.Nintendo, meanwhile, has carved out a nice niche for itself by making next-gen not about hi-def, with its ridiculously named, but extremely popular Wii.Within …

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