Same reason I didn't buy a 1440 rez Dell when I originally bought the Cinema display: the Apple product is supposed to "integrate seamlessly, for a full cinema experience, and an orgasmic combination of fanboism". The display also made for a great MBP docking station back in the day. And it's still a nice display, if ten years old.

I want another one of those, only moar pixelz. And not five thousand g-ddamned dollars.