
Originally Posted by
Musthavename
It's a feature. In one of the recent beta patches they indicated that they changed the threshold (35 to 40 iirc), so that implies it is indeed a feature.
CoTs that arn't worth much or lack traders accumulate something called "Stagnation". Stagnant CoTs can sponteanously go out of business and disappear. The AI to my knowledge will never willingly destroy a CoT.
Depending upon the wealth of the CoT in question it adds tax bonuses to the province it's based in. Coastal CoTs also reward you with 0.1 colonists per year aswell as bonus merchants (can't remember how much). Other than that the only benefit is that you can say embargo people out of it.