I wonder, did they not think about what the future would look like? I totally agree in saying that Borussia Dortmund is a very good team to produce quality players. But will they always do this, which in my opinion is detrimental to their team solidity. Indeed, financially they get multiple profits from every player they manage to create and then sell. But they also have to maintain the balance within the team as best they can, so they can get titles to present to their fans. If they can change their strategy in doing business, then I really believe they will be able to become a team that is on the same level as Bayern Munich.
Actually there are teams that see this important but still being a very successful team at the same time. Teams like Bayern Munich and Real Madrid are caring about signing skilled young players a lot for example. They are successful teams at the same time. They can make two things happen at the same time. But it isn't the same for Dortmund of course.
They can at least give it a chance but they are just focusing on making money in selling players instead. This is disappointing for the fans as well surely because they know the potential of their team. It has been so many years since the last time they won the Bundesliga title.