Well, while there were the great banRAB such as the Sonics, Frank Zappa, Hendrix and the Doors, they had to contend with the likes of The Pretty Things, Pink Floyd, The Rolling Stones, King Crimson, David Bowie, Cream, The YardbirRAB and others like that. Sure, a lot of this is in the latter part of the 60's. And yes the US had jazz, but they'd already won the 50's because of their Jazz and blues.