As far as I recall, $20 wouldn't even get you a single GoT episode in Australia. As a consequence, Australia had one of the highest piracy rates on GoT / HBO shows.
Personally, I dont feel like Foxtel is a problem so much as the business model of locking up a show within a paid streaming service. There are so many of them. If a show or movie isnt on the streaming services I already have access to I immediately just discard the idea of ever watching it. Its unlikely to even be worth the bother to find a way to watch it.