A couple years ago, Encyclopedia Britannica was on an anti-Wikipedia kick, fearing, I think, that this would be the fate of print encyclopedias:
I'm happy (and not surprised) to report this didn't happen. I believe the same will prove true with the notion of ebooks making print books obsolete. This is a big world, and things have a way of finding their own niche. Radio lives on despite television (and movies and computers), pencils live on despite pens, candles live on despite electricity, bicycles live on despite cars, etc.
Many of the books I own are older than I am, and I'm sure they'll still be around (and in use) after I'm gone.