You really think CASA is going to to do the same with the Chinese, Indonesian, or Qatari regulatory authorities?
Why not? It could be considered racist if you offered one deal to a ICAO state but then refused it to another.
In reality CASA should have just said no. All domestic commercial operations are VH registered with Australian licenses. Now CASA have opened the door I think there will be some companies that might push very hard on it and create a lot of unintended consequences for CASA. Sure deals with Canada might be ok but suddenly that will be used as a precedent for someone else to take full advantage of.