If I may, there are a couple of elements to that.
One is, as my colleagues have previously noted, that these supply chains are not necessarily very agile. It does take lead time to adjust.
The other factor was that there was reported to be tremendous solidarity with unions up and down the coast. We've seen this in other global disruptions. Cargo that was overtly diverted from the west coast ports of Canada was threatened with facing a refusal by unions on the west coast or other unionized ports in the United States to move it. That entailed a risk to shippers as well. They couldn't divert with the certain outcome that their cargo would move.