It’s not just those issues. The original Impetus for the jones act was to keep a strong merchant marine for war time, so we subsidise the us merchant fleet so that if we had need during war they would exist.
I find this difficult because my outlook for those kinds of conflicts indicates it’s not necessary to have such a fleet, but if you need it, it’s too late to decide. Those ships are a multi year build.
I would think some flexibility and also some accounting of exactly how many us merchant boats we’d need should inform changes to the Jones act.