I agree with you. Dortmund's main goal is to do business. They scout young talented players. And they develop players with experience. And sells players for a lot of money. And this is their main goal. The team is not aiming to win the Champions League or Bundesliga title. The club made a lot of money selling Haaland last season. They will likely trade Haller next season. This season Dortmund will probably add more talented young players to their squad.
Over the years that's what Dortmund always do and are excellent on it. So many players improved in Dortmund then moved to other top clubs for millions, making Dortmund richer and giving them funds to search for other players to start again.
Selling Haaland was quite interesting last year and people thought that Dortmund was doomed but they played very well and were able to almost get the first rank but they failed at the end.
The Dortmund team will be stronger next season. Because this season the Dortmund team has performed exceptionally well and the team has unfortunately lost at the end. Hopefully there will be no such disappointing performances in the next season.