Interest in the Bundesliga had decreased because it had not been competitive for years. It was seen as a simple league that Bayern Munich always won, whereas Dortmund had many players that it brought to world football. Now there will be 2 or 3 teams that can compete with Bayern Munich and hopefully the championship will be won by a team other than Bayern soon. Like everyone else, I want it to be a competitive league.
Yes it was dominating for a long time but recently since past few years, Bayern haven't been upto mark due to which other clubs have found a way to get close to Bayern on the table. I think over th e next few years it will become more competitive as Bundesliga does have some crazy underdogs and if they find a way to be consistent then they can really become one to put the eyes on for title race. Everyone wants a competitive league and I think it is becoming slowly and I think it will become harder by harder as the season goes by.
This competitive league situation has been expected for years. Bayern Munich had a team that dominated the Bundesliga for many years. Especially during the time of Robben and Ribéry, they were scoring many goals with their magnificent wings. They are good now, but they are not as dominant as they were then. Last year, they won the championship in the last match, and that was because Dortmund lost points.