A more interesting question would be: what would today's music sound like if the Beatles had never existed? There's no way to answer that, of course, but I imagine we'd be poorer for it.
I just imagine a different band would take the higher ammount of credit. Maybe The Rolling Stones would be the one in that spot instead. Or maybe some other band more on the pop side would have taken the spot. Maybe we'd have "Turtle-mania" (The Turtles)? Who knows , I just figure if its not them it woulda been someone else getting the most recognition
Well thats just what I figure but someone will always get the most credit
Kind of like how John Cena/Avenged Sevenfold take the sort of modern day shoes of Hulk Hogan/Metallica and fill them. They aren't the exact same people but they are filling the poster boy shoes for what they are so it proves that the #1 posterboy slots for anything can be filled by various people , only difference is it would have been different people and/or at a different time