mainly because as ernie said the physics of light and pigment are different nothing we can do about that only use the technology we have, it will never be perfect but its better than it was; that said i cant think of a monitor less than £400/500 that would be acceptable to me, and for the animation graphics i do where colour fidelity is paramount the cintiq 24 has excellent adobe rgb gamut, but they sure 'aint cheap and excessive if you dont need to draw with it