How many Britons did the Romans displace? And what did the Romans ever give us? Civilisation is what.
fast forward 2000 years.
When the first fleet arrived, they saw what 50,000 years of indigenous occupation had given provided for them - huge areas of cultivated crops, massive cities with water and sewerage, roads, bridges, art works, sculpture, Sistine Chapel, St Paul's cathedral, the great wall of Wollongong, ..... oh wait... wrong program. Umm..what did they find... Terra Nullius, no real evidence of occupation, just migratory tribes fighting with each other. So the first fleeters occupied it. Tough luck, it was 250 years ago, and They keep crying poor and demanding apologies and more handouts.
To the victors go the spoils.