A little improvement in the mission maybe it could be better and indeed if they are in this case they are still doing the same thing for selling their young players but I quite agree with you at least they should think about selling to other clubs if necessary outside of the bundesliga club because it gives young talent to Bayern is the same as further strengthening their rivals.
Call it Gotze and Lewandowski, who really were a crushing blow, especially for Lewandowski, who indeed had a brilliant career at Bayern and actually destroyed Dortmund in the end.
Apart from that, Dortmund have a business that they have run for several seasons where they are able to score star players and sell them to other clubs at quite high prices, like when they sold Haaland to Manchester City. thus I think dortmund will always find it difficult to break Bayern munich dominance in the bundesliga.
Bayern Munich are German champions for the 11th consecutive time and I think they'll keep winning the league