In 2016, 34 of the top 100 airports in the world were either fully or partly privatized, according to Skytrax, a British consultancy. In a speech last month at Aviation Day USA in NYC, Alexandre de Juniac, Director General and CEO of the International Air Transport Association (IATA), said none of them have improved customer service or operational efficiency.

“We have yet to see an airport privatization that has, in the long-term, delivered on the promised benefits of greater efficiency for airlines and a better experience for our customers.