I think it’s possible because we do pretty much fall into line with the US.
As for the ones based here, many of them have their operations in the UK, Antigua and elsewhere. IASbet is located here in Melbourne but they come from a horseracing background and that industry yields a lot of power here. They have the Canbet operation though, but is now UK based. Maybe we will just see them delist from the local stock exchange and move. Some are already listed on other exchanges anyway.
At the end of the day, Australia is a follower and not a leader as far as politics is concerned.