It certainly is. When we moved from Aus to Europe, we shopped around for broadband plans and I kept asking what the download limit was. Lots of blank looks. I used to have a 30GB/month plan in Aus. They don't have limits here.

In fairness, Europe and US have large populations accessing data over many links, so the cost is spread wide. Australia accesses much US data over few links and must bear the cost of that. Data is simply more expensive in Australia.

The telco's have probably had discussions on how to make local data not part of a cap, but it would be too hard to explain to normal people how to ensure that the data is locally hosted.