I don't get why you would write your first two sentences. It is very obvious how the automobile lobby has a direct influence here. Here is an excellent documentary (in German) that analyzes the issues with the DB. https://youtu.be/-dmtNToFwuI?si=3ydA_QOjzOvTke2_&t=480 At the linked time stamp, they mention that every minister of transport in the very influential period from 2009-2021 came from Bavaria, with heavy influence from companies like Audi, MAN, and BMW.