Maersk is probably more concerned with survival.
Perhaps, but it's only ~150 IT jobs which were proven to be critical during an epic cyber attack. Is Maersk really hanging by a thread that thin?
I think there's a more obvious problem that it feels like everyone is blind to. Do we really think these IT staffers are seen by their management as heros? For sure they aren't. Maersk was nearly unique in how badly it was taken out by that virus. Job number one of any IT department: don't let a virus destroy your network. They completely failed at that and the business paid a huge price. The causes were as you may expect - not keeping up with Windows updates, all the usual stuff. Not having any offline backups of critical infrastructure. Things they were trusted to get right.
Are maersk management likely to be losing sleep over replacing this team? Probably not. What are they going to argue exactly - the Indians won't do as good a job as they did?
I know it's harsh. I'm sure pointing this out won't go down well. But in the end they're not in a strong position to argue for their jobs.