Amazon needs move product to make money. If others will not physically move that product to the US, then they'll have to do it. More expensive is better than none at all.
The ships are moving. Zero Hedge's Tyler Durden didn't pay for access to the data that shows the ships that aren't in port, didn't realize it, and came to the wrong conclusion that ships aren't shipping.
It's like looking at a parking lot and concluding no cars are on the freeway.
It's like looking at a parking lot and concluding no cars are on the freeway.