It's also a decision where the federal government tries to take the credit, but in case of any financial shortfalls, for now municipalities and counties (and as far as regional railways services are concerned, the states, too, to some extent) will be left holding the short end of the stick, because the federal and state revenue support for the reduced fare comes with a hard cap.
While currently even the federal government is subject to the so-called Schuldenbremse ("debt brake"), municipalities and counties are under much stronger legal obligations to balance their budgets, and in a lot of states, public transport is an entirely voluntary matter for municipalities to provide (and even where it isn't, the mandated minimum obligation probably won't entice anybody to take public transport if you don't have to), which starts mattering in a budget crunch.
Already the first major cities have threatened future service cuts. For now that may just be political posturing, but it's still not what you would want to hear in that context, and certainly doesn't serve to encourage people getting rid of their cars, either.
While currently even the federal government is subject to the so-called Schuldenbremse ("debt brake"), municipalities and counties are under much stronger legal obligations to balance their budgets, and in a lot of states, public transport is an entirely voluntary matter for municipalities to provide (and even where it isn't, the mandated minimum obligation probably won't entice anybody to take public transport if you don't have to), which starts mattering in a budget crunch.
Already the first major cities have threatened future service cuts. For now that may just be political posturing, but it's still not what you would want to hear in that context, and certainly doesn't serve to encourage people getting rid of their cars, either.