"... by now"?
Until now, there was no need, commerce flowed fairly freely, despite disruption here or there through motorized history.
What has changed is, not only has President Trump glaringly advertised U.S. military limitations.
Trump has simultaneously educated Iran about how powerful its choke hold is on Earth's economies.
It was a dismally amateurish blunder on Trump's part.
Yet it was a predictable if not inevitable consequence of Trump surrounding himself with "yes-men" buffoons.
Any sensible field-grade commander could have / should have warned Trump of these risks before Day #1. They couldn't, after Trump cut them out of the loop.
When Trump bungles as an inept gambling casino owner it harms the casino.
When Trump bungles as president of the United States the harm is both global and severe.