I can only speak for Band Directors in saying that surprisingly, they are not a thing of the past. School bands still need directors.

I have been surprised at the longevity of Band programs since my teaching days (1977-96). Most of that time there was little or no e-learning available online (if there WAS an "online"). But, there were a host of video games out there and other stimuli that I figured would pry youngsters away from learning an instrument.

How long into the future bands will survive is anyone's guess.