> Plus, can confirm that the ME airlines are highly competitive. They're subsidized by their governments
That's not true, at least not for Emirates and Etihad, which were the main airlines accused.
Delta and other US airlines did accuse them of violating the Open Skies agreement, yes. Which is quite hypocritical since Delta (like other US airlines) has also taken direct subsidies from the US government.
But, as Emirates showed in their subsequent lawsuit, their financial records prove that they have never taken government subsidies, despite Delta's accusations. Etihad did, but long before Open Skies was signed (1999).
This behavior isn't unusual; the Big Four are just using this as an easy way to smear their biggest competitors, while ignoring other airlines that have similar financial history (China Southern, etc.). But China Southern isn't (currently) drawing passengers away from the Big Four, whereas Emirates/Etihad/Qatar are.
The Gulf aiflines are more efficient than the US airlines because they exclusively serve one city - Emirates, for example, flies only flights to or from Dubai (with a couple of tiny exceptions). That makes it a lot easier to provide excellent service and cheap flights.