There are no more Queens and Led Zeppellins. There are a million different comic book companies. Nothing connects today. Everything is disconnected. My own personal experience with the music, that I listen to is that, my friends who listen to the same type of music, have not heard of many of the bands that I listen to, nor have I heard of many of the bands that they listen to.
Lets go further.
Not only that, I've heard that the average person now changes careers 4-5 during their lives. In my own industry, the software industry, the average person switches jobs every 2 years. In all this my point is, is that to exist is to relate. Nothing today is constant. We lead discrete, disconneted tv commercial lives.