Great picture, I want the same for Arsenal. These are two clubs that use a cynical (towards their fans) business strategy, but it works. I'm not sure if this is the optimal strategy, after all, Bayern has almost all financial indicators twice as much + a bunch of titles, but apparently Dortmund is not chasing risky money, but prefers reliable ones.
The fact that they are just doing good in making money through those buying - developing - then selling it at super high prices .,, having those domestic league success will always become second priority as they have set the priority at the first place , no wonder if by then dortmund will only get a trophy once in 10 years , sad fact but profitable.
Pure business? Idk ,
winning bundesliga earn you €80m ... but dortmund earned more than that without winning anything.
What about the Champions League? There are much more earnings and it is obvious that Bayern earns there more than Dortmund on transfers. Plus, the presence of titles gives a boost to all your earnings, from advertising to ticket sales, etc. The only problem is that titles are not guaranteed if you invest in a team.