But Bayern managed to take the first place last season. Yes, Dortmund got the same number of points, but Bayern scored more goals and eventually won the Bundesliga. This kind of competition between Dortmund and Bayern happens regularly, so I wouldn't say Bayern are in some kind of crisis. It's just that this season has been difficult for all clubs.
I don't think it's still right to say that next season will be difficult for all clubs, because next season hasn't started yet so there's nothing more worthy to judge now. Even though according to predictions from some people there won't be easy things for every team next season, because they all have to be able to fight more consistently since the start of the season if they want to win in the Bundesliga and also in other championships.