The rising of guitarist such as Van Halen, was far more influential than AC/DC! AC/DC where huge, but far from influential! As for the Beetles... they are an acquired taste, and back than I suppose it was the right vibe for everyone. In this day and age I can barely stand to listen to a whole beetles album without feeling the need to punch a brit in the face for having scraggly teeth! Though, they do have some classics. Edit: AC/DC did nothing for rock'n'roll except keep it running strong!