I was doing some unrelated research and came across this quote in a piece by Clay Shirky (19/09/2014).
Check the date. It was right then; it’s unlikely to be wrong now.

Try to imagine a world where the future of print is unclear: Maybe 25 year olds will start demanding news from yesterday, delivered in an unshareable format once a day. Perhaps advertisers will decide “Click to buy” is for wimps. Mobile phones: could be a fad. After all, anything could happen with print. Hard to tell, really.

So the question is: are we facing the future of print in our teaching?