I agree. A digital file is written to disk yet has no second hand value because of the nature of replication. Your books have value after you've read them because it's not easily replicated and has more value beyond its basic consumption. It can be collected, displayed, traded, burned... It has all sorts of intrinsic value beyond the words on the page.
It's as if the printing of the media to a physical device in the end provides you a solid copy but not the rights to the work contained inside of it. You're not allowed to modify and distribute those works as that violates copyright.
I feel like the individual ownership of physical media actually protected copyright and now in the digital era, the lack of ownership is subverting its own purpose. We as a people never understood or acknowledged the implicit agreement that came with the acquisition of our books and DVDs. We ignore all the legal messaging and even made fun of it. We laughed when we realized "How could they ever enforce this?!" And so we didn't care.
Now here we are, learning in real time how it will be enforced.