I doubt that AGS has the tools in place to expunge (i love this word) the ill gotten gains and how it has been laundered. You then have to ask yourself what having extreme wealth stratification within the first 4 weeks of launch means to the health and attractiveness of the game.
If I had a vote, I would wipe out all assets and level the playing field. Give everyone a basic kit and some small amount of gold and be done with it. Otherwise the exploit ripple affects will never go away. Fair or unfair everyone is treated equally.