This is how PK works and what sets us apart from the other common pirates you deal with, and why many guilds rather hold NAP's or ally with us to prevent huge losses, and please by all means, name names, nothing to be shamed for we made millions that you so generously donated to our funds, thinking you would be immune to such a raid, I only wish more members were able to join in the festivities, but we will be sure to have them thank you for the kind donations you made to the PK.
What you are suggesting would be war, and a war for us just doing what pirates do, sounds rather foolish and would be more costly to wage such a war than to just simply rebuild and move on, you ought to take a page from Edward Teach's book, he had a guild and we took it down and he kept his pride intact and merely said I respect you, it was a good raid, and the PK respects him too, no thoughts of vengeance, no Ideas of retaliation, he accepted it and moved on.
These are the kind of people the PK respects, they understand we fill a role that is required, we make many new players rich fairly quickly and want to play more and longer, the traders of this world also serve a purpose they give players something to target and gives them hope of becoming rich, if the PK goes down another Pirate guild will just take our place from the ashes, then you will have more pirates to deal with than before and they may not play as nice as the PK does.
BTW ZomB or Maj's guild is the worst you can do in the way of guilds best to avoid him at all costs.