Because it's Americans doing stuff in America, where everyone has, in theory, the same economic opportunities so they can do what they want with their money i

Because it's Americans doing stuff in America, where everyone has, in theory, the same economic opportunities so they can do what they want with their money independent from their state. It's the same country. It's where they live, make their money and pay their taxes so they're free to spend it there as they please, so the housing and societal issues high earners cause stays internal instead of exporting it to others countries with lower purchasing power where the locals have fewer economic opportunities than Americans. People from Florida can also easily go and work top paying jobs in CA, while foreigners outside of the US can't just walz in and get high paying CA jobs whenever they want due to visa issues and other barriers put in place. That's the difference.