It'll be fascinating to see how our relationship with books plays out over the next 10-20 years. On one hand, unlike music, books are very physical objects, their content very much associated with their form, used by many as decoration within their home. On the other hand, most of us only read most of our books once. I suspect that many, like me, then hang onto those books primarily for sentimental reasons (along wit…
Hurricane season and electrical outages will still exist in 15 years and paper has proved to be the only storage medium that doesn't change every 20 years.
On the other hand, Amazon going bankrupt will wipe out your cloud library.
BTW, 20 years ago was 1994, and PDF was initially released in 1993.