they came here to steal the land, the natural resources and they did it with the view that no-one other than themselves were 'entitled' and anyone who was here already was not even to be considered.
Really? How do you know that? Were you there during the decision making? The British were very concerned about the French coming and setting up a colony before and after they had settled some of the country, certainly doesn't look like they thought they were 'entitled' to it. More like use or lose it.
At the end of the day when all is said and done you only have what you fight for. Aboriginal Tribes were never going to fend off any colonisation whether it be the Dutch, French, British or Japenese if you want to wait another 150 years.