>Hachette has nothing to gain from continuing to pursue this lawsuit
They do: Legal precedent.
IA made themselves into an easy, prominent target by doing something everyone else agreed to not do via Gentlemens' Agreements(tm) and precedents set by lesser transgressions, so now they're reaping what they sowed.
The book publishers stand to gain legal precedent that doing what IA did can and will result in legal consequences severe enough to ruin you.
They do: Legal precedent.
IA made themselves into an easy, prominent target by doing something everyone else agreed to not do via Gentlemens' Agreements(tm) and precedents set by lesser transgressions, so now they're reaping what they sowed.
The book publishers stand to gain legal precedent that doing what IA did can and will result in legal consequences severe enough to ruin you.