"IATA research shows that private sector airports are more expensive. But we could not see any gains in efficiency or levels of investment. This runs counter to the experience of airline privatization where enhanced competition resulted in lower pricing to consumers. So we don't accept that airport privatization must lead to higher costs. Airports have significant market power. Effective regulation is critical to avoiding its abuse—particularly when run for profit by private sector interests," said de Juniac who also noted that five of the top six passenger ranked airports by Skytrax are in public hands.