ROCK may not be dead, yet. But the genre has been on life supports since the '70s, when DISCO came along and poisoned this once proud and creative art form. And Rock has no one to blame for bastardizing the trade but it's own promoters, who allowed the sound to go soft, once the war in Viet Nam lost it's prominence in the American conscience.
Exciting, polished performers like The Eagles (country/rock), BTO, Alice Cooper (whom I didn't particulary care for, but he was good at his craft), Robert Plant, Linda Ronstadt, and Eric Clapton found themselves sharing airplay time with Helen Ready, Barry Manilow, The Monkees (although I idolized Michael Nesmith) and, forgive me, that "silly" Paul McCartney crap.
Since the early '70s, no truly great rock acts have come along to assume the role of raising the musical bar the way the revolutionary groups of the '60s used to do.