I think this is the wrong question.
What would be the impact on the rest of the world if they lost the american market for their goods and services in retaliation for the banning of american market goods, information and services?
American CAN survive (easily) as an Autarkic economy. It is not clear that americans would not be better OFF surviving Autarkically.
The chinese could do so as well.
The russians could do so.
The question is only the amount of political upset each country would bear as it reorganized for Autarkic production and consumption.