No offense but, one person's real life anger (I would certainly hope it isn't a common thing or I'd have to talk to asp about securing my ip address) at being pirated, in a game that allows it, shouldn't factor in to balancing it.
Worst case scenario self destructing is still an option, if you really want to. That'll be no different than how it is now.
I think it's more common than you think, but I think DarkWalkers reaction is more on the extreme side of reactions. Just look at the amount of responses to Open vs. Solo and piracy threads. A lot of players get upset if others force their will on them. I guess in many cases it's not just "I don't want to lose my cargo/cr" - otherwise those players wouldn't self-destruct or accept getting killed.
A player can't know why a complete stranger reacts the way he/she does to things the player might consider completely harmless and OK. Sometimes it's hard to separate some things form real life from a game as those things might have affected the other players personality.
At the same time I think a player who has serious problems with piracy or getting robbed or other aspects of the game in Open Mode should do everything he/she can to avoid situations that might trigger such a reaction (I know that sounds awfully like victim blaming, but that's not my intention).
That's the beauty of being able to switch between Open and Solo/Group Mode.