A good start would be to separate the ANSP from the regulator in accordance with ICAO guidance and the recommendations of several studies over the years. If you can source a copy, the Air Traffic Control Commercialization Policy: Has It Been Effective? Report Prepared by MBS Ottawa Inc makes interesting reading and addresses most of the root causes behind the deficiencies identified in this and similar threads. The MBS report was undertaken in 2004/05. NOTHING HAS CHANGED.
Gne