Well, yes apparently on this sanctions regime, but you see very effective solutions out there. Take NAFTA import duty-free terms and conditions (I'm a career functionary) as an example.

You have a penalties associated with breaches of the trade rules, and the income from the penalties are respendable revenue to bolster the auditing programs. So catching these guys is not just a slap on the wrist, it's a slap on the wrist, a hit to the pocket, and a guarantee that they'll be back for more. Those assholes wanting to risk making a quick buck end up paying the enforcement cost. Ask a Canadian or American about cross-border purchasing. If they do it, they know the rules, and they follow them.

We should not throw our hands in the air and give up.