Another point to bear in mind is that, in Britain
at least, authors get paid when their works are borrowed from public libraries
. I don't know if this is the case in the US, but certainly in the UK there are a few popular author
s who make the bulk of their income from libraries.
There was a huge fuss made by an authors' group a couple of years ago when the government tried to cut the already tiny amounts (a fraction of a penny per book borrowed) paid to authors.