The general impact of this new kind of music making cannot be measured - or over evaluated - as most other music on the western hemisphere has been influenced by it, even classical music since also young classical composers have grown up with it, hence the cross over activities between musical styles that previously were very different, if not direct opposites.  And pop music will forever be influenced by the rhythmic timing and melodic intonation in rock music.

In later years all of this has been summed up in the term rock music.  Its early beginnings came to be known as rock 'n' roll, but where and when the original rock 'n' roll music ended and was fused into other, similar musical expressions isn't really interesting.