It's easy to be a naysayer... so here I go.
The Paperless office was first predicted in 1976 and was said to be inevitable within the next 10 years.
Even if Art is right and we do develop a Kindle-like replacement for paper, I don't see it taking on any great marketshare in the next 20 years.
I do think our industry is in a decline, I do think the copier will eventually disappear (or at least drop to minimal levels). I just haven't seen our replacement yet.