Re: Contrition is a religious concept,
No. You're just kidding yourself. You're assuming that the corporation will act in good faith when that is the least likely thing to happen. Even multiple public shamings and large jury awards don't always encourage corporations to do the right thing. Assuming that they would mend their ways because of a polite little note is absurd bordering on being a diagnosable psychological disorder.
Despite his other conduct, exposing this to the world was a valuable public service. We would never have known otherwise and AT&T would never have any motivation to clean up their act.