To add to @slickgoat@lemmy.world 's points, Australia isn't afraid of foreigners, it has very high migration. You might be confused because of the government's reprehensible treatment of asylum seekers. Yes it was colonised by England, but internally, diversity is the most celebrated aspect of Australia.

Australia has been dubbed 'the lucky country' because despite a lack of smarts (manufacturing and other value added economic activity), we've always been able to dig things out of the ground and sell it (coal, wood, gas, food, gold...). Though Australia never developed a serious manufacturing sector, it has pivoted to a service economy instead, with that sector's highest export being higher education.

The lessons to learn from Australia is be rich, be on the other side of the world away from the world wars, and have high welfare spending (plenty of room for improvement though).