Not to say your point isn't true, but that has nothing to do with successive governments shitting on each other's plans when it comes to installing infrastructure to houses (or choosing the right infrastructure to install).
Sure. I think they are two separate, but related problems. Even if the NBN were perfect and brought gigabit internet access to the entire country, without more intl transit it wouldn't help as much as people would hope.
It would still make a huge difference on the things that matter the most bandwidth-wise, such a video services and software distribution - all things that are on geographically distributed CDNs with local nodes in Australia