I’ll never buy anything but printed books.
When/if the grid goes down, people with books will be at a comfortable advantage. No batteries required.
The biggest advantage of physical books is that the censors cannot go back and “edit” them to make them “politically acceptable”.
That applies to both fiction and non-fiction.
Imho this will become a bigger and bigger issue in the years ahead.
Time enough at last! Just make sure you have spare glasses.