We germans love to criticize even huge improvements, don‘t we? 49€ is dead cheap for that ticket.
9€ would have been a revolution of public transportation. A major step to achieve the emission goals of ministry of transportation, which it utterly fails at and can't even come up with a strategy how to achieve any reductions.
49€ is nice for everyone already using public transportation on a regular basis, but will not induce a significant change in transportation method used, which is desperately needed.