Philip Elmer-DeWitt reports for Fortune, “Why didn’t Apple’s (AAPL) share price take a huge hit after news broke that the DOJ’s antitrust division had sued the company and five publishers for alleged collusion in the e-book business?”

Three reasons:
• It was hardly a surprise
• There’s still a chance for a settlement
• It’s not Apple’s main business

Read more in the full article here.