How are classic rock musicians defined? By album? By song? By fan reaction? By critic reaction? By impact on the genre?
The Police is a classic. U2 is a classic. Duran Duran (a must to add in this post) is a classic. There are countless more classics from Europe and the U.S. specifically, but these three speak to me the most.
Of course millions of fans know rock classics, sure. Yet, how does a band go from a struggle for recognition to global recognition? At one point in the interim does this happen?
I am only a fan. I cannot begin to speculate on the interim.