Worth bearing in mind that, in the UK at least, both the LOTR trilogy and The Hobbit are very widely read books. This was the case both before and after the films. The Hobbit in particular is a standard early serious book that kids read - also standard issue bedtime reading by parents.
People were desperate for the LOTR films because the stories were already such a cultural force. That remains true independent of the aging films. The books are 70 years old, and will still be widely read in another 70 years after 2-3 more reboots.