If you would have read about AMD instead of wise cracking, you would have found that he did come to the aid of a friend. Unfortunately for Jerry, the "friend" ran and left Jerry to fight alone.
Having observed Sanders performance as AMD CEO for so many years I wouldn't be surprised if the whole left for dead story was made up to increase his mystique. Like the tech CEO a few years back who was caught lying about being a fighter pilot in the Viet Nam war.