The first sentence of the story talks about obb introducing these trains as a less poluting alternative.

As a customer, that is more or less valuable to you depending on how much you worry about the impact of planes on the environment. I am self identifying as someone for whom that isn't one of the decision criteria. If that was my number one concern then I wouldn't fly. But then I guess I wouldn't travel via any mode.

Ah gotcha

Thank you for prompting me, I realize I didn't articulate this in my first comment.