The following I consider obvious, but I will repeat it, because I am frustrated by it
Books should be free (well everything should be, but especially books)
Their digital version should also be made accessible online: this gives access to people living in different places than the publisher. Also e.g. to people with a visual impairment.
Furthemore, it makes it easy to remix the book or react to it, build on top of it.
Yes, artists (incl. writers) should have enough resources to lead a comfortable life. (So does everyone.) Today this means: they should be paid. People who (illegally) download books online aren't the reason why writers mostly don't have much money. Access to books should be decoupled from resources for writers.