Battle - People denying the heritage, doing it their own way, until the Guitar Phase is destroyed, lost to the ages of time and the foot tapping of the past.
The 1940s were Big Bands
And then the 50s slid from Big Bands to Small Bands with Guitars
We're in the Guitar Age but traveling down the road towards change again, aided by guitar pedals, synthesizers, etc., (all the accessories so needed) into something unearthly and not physically done with our hands. The electric guitar changed this, plug in plug in, bending of notes, feeling the music.
Until eventually most music will be electronic, rhythms not performed by Artists but by technicians who understand this lingo of the mind.