“Air traffic control (ATC) is too important to be vulnerable to politics. Around the world, governments have acknowledged this fact and depoliticized their ATC systems, beginning with the reformist Labor government of New Zealand in 1987. They removed the ATC system from their transport ministry and permitted the aviation user fees that had been paid to the government to instead be paid to the new Airways New Zealand.
It worked so well that within a decade, a dozen more governments had followed suit, realizing that ATC is essentially a public utility, analogous to electricity. A stream of ATC user-fee payments is a bondable revenue stream that has been utilized by ATC utilities to finance large-scale technology upgrades and consolidate aging ATC facilities into a smaller number of modern ones.
Today, roughly 100 countries receive their air traffic control services from user-funded utilities.”