Why is Perth Airport the worst in Australia

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Why is the West Australian Airports Corporation ( a bunch of greedy thieving bastards) responsible for the most hopeless airport in Australia. What process of political corruption lead to these thieving bastards being in charge of a major piece of infrastructure? ( To put it in lying rodent terms).
Major achievements of WAC(ky)
1. The destruction of a nice piece of bushland.
2. Allowing a brickworks without environmental checks . ( Don't bullshit about it).
3. An airport that is in chaos with traffic jams. Don't forget to get to the airport early.
These shits are laughing all the way to the bank. I need assistance to get the history of how this happened.