The median U.S. white/Asian net worth is comparable (2/3 of population and comparable demographics to Australia). And only 40-50% of US net worth is housing versus 70% for Australia. The higher net worth is mostly the world’s biggest housing bubble.
The wealth in the U.S. is in the suburbs where most people live, not the city centers like most countries (which is where poor & homeless people are in the U.S.). Go to any suburban area, where most tourists never go, and you will see where the wealth is at. The homeless you see are drug addicts, not people who are down on their luck.