I confess, I've never read it.
But I just ordered it. Need a new read. Thanks for the recommendation.
There are so many great science fiction books that could be adapted for the screen. So many that are better than the dreck we often get.
There's been talk of adapting Snow Crash for decades. What about Stranger in a Strange Land? I, and we, could go on for hours.
Part of it is the suits in Hollywood. They'll ruin your work. The author John Varley refuses to work with them after they destroyed his short story with the crappy movie Millenium (1989).