What’s wrong with your analogy is that your person is a rogue.
THE NATIONS OF THE WORLD have laws in place to regulate mutual respect of trade law.
Antigua would be acting according to the laws established by THE WORLD, not yours, not mine, and not it’s own.
Your analogy is also wrong in that the butcher in your story has previously caused this person to become a vagrant by bullying them out of their profession so the butcher could make all the money in that branch.
Either we have free trade, or we don’t.
It can’t be “freer” for one nation than for another.