Earlier quoted context omitted.
>What do they expect them to do? Use trains.
Except that trains don't have the same possible destinations, you can't (easily) take a train to a destination outside EU. I think the gov went in the wrong direction here, the tax for flights within France should have been the highest, to give more incentives for using the train
I do not know of a commercial airport without a train station. There do however appear to be plenty of rail stations that do not have airports.
>you can't (easily) take a train to a destination outside EU.
Britain is about to test this theory. But also, that is nonsense. Passenger trains leave and enter the EU all the time.