Right now as Freiburg, Borussia Dortmund and Union Berlin giving challenge if they keep this momentum then surely we will be able to have some good end of this season not only one team is going to win league around six or seven weeks before end of season.
you are right, Compared to Bayern Munich, Freiburg, Union Berlin and Dortmund are playing quite well. But these teams cannot maintain the consistency of their performance like Bayern Munich can. If Union Berlin and Dortmund can maintain consistency and pick up points against Bayern Munich, then maybe we won't just see Bayern Munich dominate this season. I'm annoyed of watching Bayern Munich dominate.
There is a good chance that Bayern may not neither. I know that we have seen a bayern team that ends up winning the title all the time and they have a physical training that makes sure that even at 30th game of the season they are not tired or have fatigue, which allows them to be better for far longer, but that doesn't change the fact that "one day" they will lose, and it may or may not be this season, but eventually they will lose the title for sure, nobody wins the league forever, it can't be 30 seasons in a row, that means maybe we will have it this year?
Look at PSG, they are definitely better than their opponents and easily win, but that one year Lille won it, maybe it is time for bundesliga too?