Why is Apple (AAPL) fighting the government over the latter's accusations that the company manipulated e-book prices when the five publishers involved in the case settled? asks the WSJ's Jessica Lessin. One reason is that Apple maintains it has done nothing wrong. Another is that the ramifications will affect digital commerce in general. A "win would help Apple maintain negotiating clout with media companies" and better compete with Amazon. However, a loss "could expose Apple to restrictive government monitoring and private lawsuits."