I am familiar with suits and the amount of enlightenment they shed. I read the thread you pointed to already. I already had a CEO who took over my company, made millions, bailed, and left customers and employees to go down the tubes.
A rough rule of thumb. btw, is that anyone who holds press conferences is definitely a public figure. Not that that is the only criterion possible. Maybe a janitor who speaks out at a union meeting is still not a public figure, but Elop is not a close call; he is big and obvious.