Do we know that to be the case? This could just as likely be an incompetent prosecutor showing up with inadequate or invalidated evidence and the jury throwing the case out on grounds of procedural incompetence rather than sympathy.

Not sure why your comment is being downvote. That is in fact the best explanation for what is going on here, and the outcome has little to do with the competence of the prosecutor, as is perhaps alluded to by the original comment.

It's good to see individuals on a jury acting according to rational self-interest.

Not real recent. Nullification like this goes far back. It just requires a certain level of bias across the jury pool. After which, some people or companies will be unable to be protected by criminal law.