The answer is a good sturdy ROM.
I’m inclined to think that big companies and governments may already be doing this sort of thing, but since ROM is basically useless for consumers, we don’t see any of it.
If it’s not already being done, that’s a big project someone needs to get on.
It was my gut reaction of about two seconds. At that point that I remembered Friendship is Optimal and chuckled internally at my amusingly illogical double standards.
As long as information and utility are both conserved, and ideally increased (in proportion to the entropy expended in the process), I really see no problems intellectually, even if I dislike the thought of mutilating books on principle.