These predictions were famously overoptimistic. Paradoxically, paper consumption went up for a long time instead, because printers became cheaper or better, and wysiwyg word processors made it far easier than type writers to produce complex documents, with pictures and diagrams and tables.
But approximately since the smartphone era, printer usage indeed seems in sharp decline. The paperless office, at last, became reality. Just a few decades later than expected.
If I could get a digital music stand that worked well and wasn't expensive I'd get rid of a lot of my print. (I need one for the piano, one for the keyboard, one for each kid into music, so cost is very important!)
