Even in the music industry "real world" this manifests every few years in the following statement:
"Jazz is dead, man."
Then, somebody comes along to literally blow that fallacy out of the water. In the '50s it was Brubeck and Cal Tjader, in the '60s, Maynard (and do not even think of dissing him in my presence) and Herbie, in the '70s', say hello to Chuck and Chick. Later we get Cobham (drum corps alumnus, like Corea), Spyro Gyra, Yellowjackets, Weather Report, Wynton...the d@mn thing just won't die.
Don't fret. We'll hear and see it in D&B corps again, sooner rather than later. Stay tuned.