Either the EU opens Hormuz or the EU pays twice the pre war rate for gas / oil indefinitely. Of course at least they can put the subjects that bitch about it in jail now.
It's unlikely to happen, but that's the one thing I can see that the EU could contribute to the opening of Hormuz.
So americans will be paying 2x as well its just that some of that money will stay in the country instead of going to the middle easter or US (which happens to be the largest supplier of oil to the EU)
Back in 2025 EU imported ~15% from the gulf. China was over 40% and Japan at 95%...