Many of those are just talk.. And 5 years or more from now.... And think "grandfathered"...there are still many cars made before "unleaded " on the roads.
If all of your examples actually follow through... we talking thousands of Vehicles??? A drop in the bucket and not for at least 5 years.
Now think... there's TRILLIONS invested in diesel infrastructure and Vehicles... that can't/won't go away quickly... when only millions... have been spent on fuel cells.