AJ, please don't mix the Non-Sentient goods trades or issues with the Sentient goods. Each has unique issues that are not exchangeable. It is truly apples and oranges....
All I'm saying is that there need not be a lot of organization or a lot of players. One person, able to produce whatever it is they "parasites" are making their profit on, undercutting those players profit, brings the price down at the same time it makes a profit for the player doing so. And as the price goes down, it goes down for all.