Back in the early 90s I flew a Feral Garment Minister to the site, where, in front of gathered TV and press cameras, the sod turned the first sod with a silver spade. A sign was unveiled, everybody packed up, we flew back to Mascot, and the pollies pulled their puds for a while in joy.
Then the cobwebs and mould covered the sign, it was pulled down, the Garment sold off the land at a loss (surprise, surprise) and people built more houses over the proposed runway.
it will never happen.