If Dortmund's goal was to win the Bundesliga, I think they could have done it. A number of talented players have emerged from the Dortmund club in the last few seasons. And Dortmund sold these players at a high price. Had they not sold these players they could have dominated the Bundesliga. Bayern Munich challenge for the Bundesliga title. The team would have been able to play well even in the Champions League. However, the Dortmund management probably has no desire to win the title. Like the previous seasons, Bayern Munich is the most likely to win the Bundesliga this season.
But that is difficult to happen because Dortmund continues to sell their best players in every transfer window. In fact, they don't regret their decision because they were really looking for money in the transfer window. Like selling Bellingham to Real Madrid, of course many people consider it a big loss for Dortmund to let go of their best star. But they only focus on looking for big profits in every transfer window so it's not surprising that Dortmund has been fasting for a title for a long time.
Even this season, players who stand out at their club could be released in the winter transfer window because Dortmund don't think about anything else other than making money in the transfer window. This season, Dortmund is not too strong in the Bundesliga because other teams are able to perform better than them, such as Leverkusen and Bayern Munich. I think Dortmund still maintains their trend of only being in the top 4 every season.
Yes, considering its economic potential and the way it goes shopping during each transfer window, Dortmund is the opposite of other clubs. Since Dortmund has to make money through transfers, They can sell any of the club's stars as long as they get a high price. Dortmund is forced to sell Bellingham like they sold Haaland or Dembele. After that, Moukoko and Duranville will step up to take on important roles in the team. But the story will always be just such a circle. They only focus on investing in young players with potential or cheap but good players from free transfers. Buying low and selling high is always the way this club does business.