Since whiteweb and darkweb markets are in essence not the same, you cannot simply conclude from one to another. I´m quite surprized you even tried that and build a theory around it, which because of its missing logic is worthless. The „very low“ risk of the seller because of the increased “trust” when using your currency, is just an assumption, sadly not proven in the PoC and disregarding the fact that illegitimate cancellation of transactions would leave the seller with empty hands and thus in disadvantage compared to escrow services. I guess that lack of reasoning may be one of the causes you missed out on your ICO in the first place.