Credit Suisse estimates that 35% of China COSCO's revenue and 32% of China Shipping Container Lines' comes from the Asia-Europe route, while earnings from European trade for the country's port operators varies between 7.3% to 34.1%.
Alvin Rabushka, a senior fellow at Stanford's Hoover Institution, believes it's only a matter of time before an emerging economic superpower like China or India goes the flat-tax route.