Cant remember if it was Pepsi or Coke that got ahold of the other's recipe but they returned it still sealed. I read somewhere that they had no intention of stealing the recipe since both companies are insainely profitable already.
To be honest, thats not even a nice gesture, thats literally common sense. Their business is way profitable as it is, and the chances of this not being discovered (and it is corporate espionage) are hella fucking low, and that would be a PR nightmare, and would probably backfire.
Source: http://www.washingtonpost.com/wp-dyn/content/article/2006/07/05/AR2006070501717.html
if you see random, weird coloured mushrooms in the forest; don't eat them
*magically summons mushroom*