I'd settle for any number of necks. Currently, when a corporation fucks something up, breaks the law, or hurts or even kills people, there aren't consequences besides a tiny token fine and a strongly worded letter telling them to not do it again or they'll get another tiny fine and letter, and their CEO might even have to sit down in front of Congress to say a few words and look sad.

Whatever is easiest to legislate and most people agree on, as long as there is at least one wringable neck.