Reason #2 is chicken and egg. I'm not excusing OpenGL for this fact, I'm just stating that if people cared about the quality of OpenGL drivers and made purchas

Reason #2 is chicken and egg. I'm not excusing OpenGL for this fact, I'm just stating that if people cared about the quality of OpenGL drivers and made purchasing decisions based on that, then you bet your ass the manufacturers would make the OpenGL drivers better.