Live venues are designed to appeal to the human eye, not the camera. If this were not the case, we would all sit home and watch movies because movies and live stage would look the same, but they don’t. The amazing capacity of the human eye is to blame: the human eye can see over 11 light ranges (photographers call them f-stops) where the camera can see barely three. An example of this phenomenon: have you ever seen a person looking great in full sunlight and taken their picture, only to find that the shadow under their hat looks totally black when the photo is developed?
Live stage, being designed for the eye, is full of dark shades, contrasting light, poor color light, low light, and movement. Combine these things and we are confronted with a very difficult situation to photograph.