I think this topic needs to be split in 2 parts:
1. Political issue
If fixhepc will be banned in Australia, it would be a small bureaucratic success of TGA. For sure, this will signal in other regions from the world something like "Watch out what you are doing in the Cyberspace, we know and see everything We are BIG BROTHER

"
In addition to this, it would be a real blow for Australian people -> meaning Australia is cutting the chance for its people to get treated FREE OF CHARGE for the government (because people do buy the medicine with their own money).
What TGA simply does is to "build a lire under oneself"
Question: is there any legal possibility in Australia that people can demand a new or ask to postpone a certain legal settlement? Like enabling the
advertisement, but not selling, of the medication if that medication is not available in the country in sufficient quantity to treat everyone? Because in fact this is the key issue in all countries from the world, there is not enough "GILEAD" drugs for all patients (yes, we know, because they are so expensive....). As patient, I do not care so much if the government wants to pay 100 times more for my cure (even though I would still be irritated for the money being waist)
There are some countries where if you can collect a certain number of signatures, you may actually initiate legal changes.
After all, Australia is still "officially" a democracy.....
2. Technical issue
IT solutions to enable Australian people to still access fixhepc.com perhaps exists, but this might lead to the fact that not all Australian people will be able to visit the "original" fixhepc website. This might turn to be an issue of risks/accessibility for the visitors. And a possible further reason for TGA to say that fixhepc is "offending" even further the Australian's laws.
If following the TGA rules it will be decided to forbid the access of australian people to fixhepc, I think there will be a consequence that was not forseen: Fixhepc will become the first martyr in the medical world from the last xx years.
Last but not least, there is still a good thing happening today: more and more people know that generic drugs do treat HCV.
If you look for instance here
www.moneycontrol.com/annual-report/cipla/C/2015 at the financial report from Cipla, you will note a solid revenue increase, year by year. If I am right, in 2015 they got ~200 million $ more money (the term on indian crore confuses me sometimes). If only half of this increase would be caused by the generic HCV medication, this means they saved at least 100 000 patients. 100 000 patients that will spread the news about generic HCV medication. And they do aim to sell the HCV drugs to ~100 million patients from low-income. I doubt that Big Pharma will be really able to stop such companies in making money. How much time is BIG PHARMA thinking that they will be able to keep this "news" under control by means of legal settlements for intellectual property?
So... the awareness of affordable and cheap HCV drugs will increase in the future (no matter what TGA does in Australia). In my view, it will only show how stupid TGA is acting. (OMG - am I "offending" TGA, if yes, please excuse me for being right)