@SamuraiBlue
Blackstone didn't realise or was in denial about how the USA is in
relative decline.
But let's take your point on US dollar hegemony, because yes,
1. most international trade is currently denominated in dollars
2. and therefore has to be transacted through the US banking system and US laws
3. and the most common reserve currency is the US dollar
But I think you need to look what at developments there have been with regards to the
relative decline in the importance of the dollar.
1. The studies now show that Asian currencies are more closely correlated with the RMB than the USD, because of the centrality of the Chinese economy within Asia. So logically it makes more sense for Asian currencies to peg themselves to the RMB and denominate trade in the RMB rather than the USD. This would better smooth out the impact of currency fluctuations and instability.
2. We also see a steady long-term loosening of control of the RMB and the removal of capital controls, which will promote its use abroad.
3. The recent phase 1 launch of the 'China International Payments System' will provide an alternative to Swift which is dominated by US/European banks. Later phases will expand the scope of a clearing network for international transactions, which would favour the RMB.
4. China Unionpay has now grown to become the world's largest card payment network. In places like Korea, unionpay-based transactions are dominant over Visa/Mastercard, and would presumably favour the RMB over the USD. Remember that China as a trade/investment/tourism partner is more important to Korea than the combination of Japan+USA.
5. China only recently became the world's largest oil importer, but it will probably take another 10 years before it grows to becomes a larger oil consumer than the USA. At that point, it would obviously be logical for Asia and the Middle East to price oil in RMB instead of USD.
6. "the main benefit of using the renminbi is that for large importers (often retailers) it is cheaper – it removes the foreign exchange margin from the contract and often Chinese companies will offer a discount of 1-2 per cent if buyers pay in renminbi."
...
He adds: “Many times you are able to negotiate larger discounts with your suppliers if you are paying in Rmb” because paying in foreign currency creates procedural bottlenecks and delays.
7. And as the Chinese economy continues to grow much faster than the US economy, we can expect RMB usage to increase significantly, and possibly replace the USD. After all, China is already the world's largest trading nation, outbound tourist provider and spender, largest net foreign investor, largest in terms of actual economic output etc etc.
Various articles below