I have a theory about this:
Considering books have been around for at least millenia, but also recognizing that people in the past have been reading more than we do now.
Which are both more or less facts.
I'd argue that books are too important for many people, and they are also considerably more simple to produce than any electronics etc. (As long as we don't run out of fiber, which I doubt will ever happen but nowadays really anything seems possible sometimes, still I don't think so).
Anyways, I think that we even enjoy reading books more than digital entertainment.
But it isn't as instant of an enjoyment. It needs some practice.
Reading books is really a kind of chilled out sweet spot of entertainment vs activity, it seems to me.
Most likely we'll go even so far as to ban electronics/social media etc for younger people. Not only to push digital ID etc but also because it is actually kind of detrimental to human abilities. Once that settles in, I think people will start reading more again...