Not everyone, the "participants" in the chain (typically 8-10 addresses) can arbitrarily inflate pricing by only paying fees which are trivially covered by the

Not everyone, the "participants" in the chain (typically 8-10 addresses) can arbitrarily inflate pricing by only paying fees which are trivially covered by the final trade. Once inflated, that final address can use a "mixer" to exit (for example) and essentially if KYC is performed in the conversion to fiat, it's after the mix and relatively untraceable.