Bayern is very well, because they have no strong adversaries, but this is due to the fact that in the other teams they prefer to do business of players of what they get their good players and fight to win the Bundesliga, and very advantageous for Bayern that all seasons they They already know that they will win, but something very good from Bayern and that they prepare a team of championship, they are strong strong, there is nothing like: "They just win in Germany", no, they are strong in Europe, when a team Will Europe play against Bayern? are afraid of losing
Bayern can consistency for longer time in Bundesliga and have been success ten season in a row become the champion at domestic league, I think its true with other team prefer business only with their player transfer without try keep compete and make Bayern faced difficult win domestic league every season.
Dortmund as the only one team have great chance for destroying Bayern Munich dominance, but least prefer sell their star player and take care with how much profit earn from selling their player than keep extended them to get domestic league tittle. Nothing can't changed with Bayern Munich consistency with domestic league tittle because at the end always Bayern is the winner.