AUS is already filled to overflowing. It's absolutely nuts. Pre-COVID, you'd do a 0500 show thinking you'll grab a bite on the way to the gate, but every food place has 30 people in line and the whole terminal is already standing room only, and the only thing you could get is coffee at the self-serve coffee stand.
Every gate is filled, and every spot surrounding the terminal has \ an airplane parked on it (stay on that taxiway centerline!).
And this was after the terminal extension opened.