What makes me wonder is that sometimes Dortmund releases its players to its main competitors like Bayern Munich even though Dortmund can sell them to other leagues rather than to Bayern Munich where Bayern Munich always weakens Dortmund's strength by buying its important players but because Dortmund only thinks about profit, they don't care even though they make quite fatal mistakes if they continue like that Dortmund will continue to be defeated by Bayern Munich in Bundesliga.
Actually, it's not wrong if Dortmund does this, after all, this is not his own will and the player is also willing to go to a bigger club like Jude Bellingham to Real Madrid and Erling Haaland to Man City. These players are also very happy to be in these big clubs and become valuable assets.
Moreover, even though Dortmund has good players in it, it does not guarantee that they will become champions because as far as I know, their priority is only to try to highlight the abilities of their players so that they will be noticed by top clubs so that their business can continue to run smoothly.
Apart from business matters, it does not mean that Dortmund does not want to retain its mainstay players, in fact quite a few players have been sold to their own rivals, but because their players do not want to stay, what else can we do? If forced, they will not play wholeheartedly, rather than being retained, it is better to just sell them, in Dortmund to hone their skills and make their name big, their names are already big, then they leave. There are many examples such as Lewandowski, Pulisic, Dembele, Sancho, Haaland, Jude and others. Only Marco Reus is the most loyal player in Dortmund and has never left Dortmund.
From here it is clear that Dortmund is a business club and prioritizes business and profit above all else. Unlike other clubs that can balance business and the quality of their team. Dortmund seems to prefer to focus on its business only and is not so ambitious to chase trophies.
In addition to the gap that occurred between Dortmund and Bayern Munich in the past. On the other hand, Bayern Munich is too OP in the German league and it is difficult to compete with them, just like PSG in the French league. This over-dominance, which makes clubs like Dortmund think realistically and prefer to stay in their comfort zone rather than having to compete tooth and nail against Bayern Munich. However, the Bundesliga this year was shaken after Leverkusen performed impressively last season, with Leverkusen's presence making Bayern Munich's dominance a little shaky, even in my opinion this season Leverkusen has a great chance to defend the Bundesliga title.