Dortmund seems priority with the money than winning tittle on every season, looks with current transfer players Dortmund leave by many star player every season and selling them with higher values make them earn much profit for every season. Dortmund have balanced with business but looks they can't dominance for winning Bundesliga on every season.
It has very strong relationship with the history of dortmund.
https://www.firsttouchaf.com/newsroom/2020/1/29/how-did-borussia-dortmund-become-a-factory-for-talent#Dortmund was not care about getting a trophy but the problem if it must also try to be aware with the condition from financial of club. Dortmund is not a club that owned by billionaire like other league. Dortmund has been owned by its fans and the income were not so big for the club to keep playing and pay all of expenses that already made by the club. Developing and investing in youth talent has become the only solution for dortmund right now.
The club can survive till now. I remember that when dortmund was bailed out caused by it has been facing very huge debt and dortmund use the strategy to use young talent as investment to leave from such problem and it worked.