Musicians being competitive has nothing to do with the fact that music is not a competition. Musicians are competitive because human beings are competitive.
Point the First: the picture was about musicians. Without them, no music.
Point the Second: ever heard of a fugue? That would definitely constitute a competition for the attention of the listener within music. And within a single composition.
Point the Third: from time to time, a style of music will push out current forms and take the fore-front of human experience and enjoyment.
Point the Fourth: Needs more cow bell!
DO IT AGAIN!
Off topic!!!!