What do you expect? They already bought Haller as a main striker. Do you think they will buy another striker? They bought Adeyemi so they have two new strikers. Besides that they spent more money than they got, so I don't really understand how you follow them. Money come from Haaland already gone to Haller and Adeyemi and they also spent twenty more to buy Schlotterbeck for defense. I'm all in for signing more star players but is club finance up to it? I don't think they will spend more money without selling players.
For me this is happening first time in last few years that Borussia Dortmund is investing more than they have from a transfer, and now they are doing some interesting transfers which are going to help their strength with this all now they are more challenging for Bayern Munich because in last season they were near title race but at the end lost due to some injuries and poor results now we can expect tough race even Bayern is also doing good decisions and bringing few quality players.
Even they are still in their way of having youths in their team and after few years sell them for big amount because they can't stop this all which is helping strongly for their financial strength but now fighting for title is also very impressive.
I really hope that Dortmund is considering changes in the team so that they will have some chances to compete against Bayern Munich for the league title. In other words, they are making changes to make successful business happen for these players in the future. To be honest they are not even close to Bayern Munich in terms of giving them a proper fight. However, I would like to see them at least give it a try and not always think about money. The team will eventually earn money if it does not simply focus on acquiring young players and selling them for a profit later and instead focuses on winning trophies.