Dortmund is purely a business club and it's not surprising when they can develop young talents, so if there is an offer from a European team who wants to make up for it at a fantastic fee, Dortmund will let the player go. But indeed the competition between Dortmund and Bayern Munich is endless even though Dortmund always loses its talented players every season and I think it will continue to happen if Dortmund still uses its mindset to always sell the players needed by the team to win the Bundesliga title or other competitions.
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.
after last season dortmund got big money from selling haaland this season they got big money from selling bellingham and that's really amazing imo, rumors are circulating that dortmund is negotiating with a young juventus player (Nicolo Rovella) it looks like they're going to do a smooth player buying and selling business.