Free software is software that respects your freedom and the social solidarity of your community. So it’s free as in freedom.
If ebooks mean that readers’ freedom must either increase or decrease we must demand the increase.
In the free/libre software movement we develop software that respects users’ freedom so we and you can escape from software that doesn’t.
Value your freedom or you will lose it teaches history. ‘Don’t bother us with politics’ respond those who don’t want to learn.
With paper printed books you have certain freedoms. You can acquire the book anonymously by paying cash which is the way I always buy books. I never use a credit card. I don’t identify to any database when I buy books. Amazon takes away that freedom.