It's a good question without a simple clear answer. The shortest answer, which elides a lot of nuance, is that the shipping conglomerates (like so much in the c

It's a good question without a simple clear answer. The shortest answer, which elides a lot of nuance, is that the shipping conglomerates (like so much in the current global supply chain) have been overly-optimizing for profit, at the expense of resiliency. That means consolidating business operations in fewer ports in order to drive up efficiency. Long term I definitely would not be surprised if some of the bigger shipping players recognize the need to diversify and invest in operations facilities across more ports. But that takes time and money.