This is not always strictly true, with projects like OpenBazaar the risks can be transfered to an explicit third party with a proven record of being impartial.
Please name me some of these impartial third parties, then? Can’t be hard for you to track them down if they really do exist, after all they should be on some immutable blockchain somewhere...
Firstly there's a difference between impartial third parties and third parties which a record of being impartial.
Secondly I wouldn't endorse using OpenBazaar in its current state. The ideas and concepts are there but the user experience is inconsistent and awful.
https://medium.com/openbazaarproject/verified-moderators-c83...
Here's a post detailing what I was taking about. Unfortunately OB's interface for these things are awful and I'm not invested in its platform.
That was the point I was making: the idea of an 'impartial third party' on an anonymous blockchain is a pathetic joke. OpenBazaar's half-assed solution is to:
1) Moderate the moderators: Great, now we have two problems.
2) Try to tie moderators to a real-world ID: Realising they have to roll back the purported 'features' of crypto-currency (anonymous, peer-to-peer, unrestricted, etc), in order to try to get somewhere close to normal, real-world, commercial transactions.