Completely agree. What you describe, is fair. There is a law. They must comply. What I had in mind is that countries will come up with unfair actions against A

Completely agree. What you describe, is fair. There is a law. They must comply. What I had in mind is that countries will come up with unfair actions against Amazon. By unfair I mean that with regards to the actual action, not the general situation or the end outcome. For instance, Airbnb or Uber, who are disrupting markets by flirting with legality in many cities, are often targeted by regulations aimed at them, specifically. These regulations are not always fair since their purpose is to reset, if not invert, a situation to help struggling local players. The end goal is to have a fair market, but when fairness is about defending local, less competitive players at all cost then the regulation is unfair. Maybe the word 'fair' is not exactly the right one. 'appropriate' might be better.