Point is, that its super easy to reach the moneycap of this game if you just sail around and trade. Since introduction of those 'trade-goods' you get money just for sailing stuff from a to b. This has no influence on any wareconomy (e.g. deplete rescources for one nation). As a pvp player you are just interested in pvp marks, not in artificial trading goods you would have to sail from a to b, since you would have done the same trade route from start on if you are after those money makers. If you see a ship full of teak logs, you can currently still sink the ship, sail to the ship wreck and put all teak logs into your hold (by overloading your ship by multiple folds what you could hold in the first place). So i doubt there is any necessity right now in this game to just negate the only good thing you can do in this game (and that is sinking ships of course).