It would be best that there be no decoupling. The decoupling is driven by a belief by some in the American government that they can somehow blunt the economic development of China and maintain American geopolitical hegemony into the foreseeable future. That's a very dangerous thing to attempt to do, because it sets the two countries on a definite path towards conflict. The question is really whether the United States is willing to accept its probable status as the #2 power in the world in a few decades, or whether it will make a serious attempt to retain its current position. Certain people who are influential with the current occupant of the White House, including Peter Navarro and Steve Bannon, truly believe that the latter option is possible, and are willing to enter into a major conflict with China.