It's all about selling beverages... The transfer fee is just ad revenue.
That's been the narrative for the past decade, except in the corporate world, it doesn't work like that. Each division of Red bull global would have its own P&L and has to answer to why they were or were not profitable. If Leipzig spends $100M on inbound signings, they better make it back via increased TV revenue, tournament winnings, etc. They can't just say "well the beverage division sold more cans, so it's ok that we're operating at a deficit
It's the reason why RBNY will never again be a big spending team. There's simply no reason to drop $10M on an incoming transfer if the ultimate end result (winning MLS cup, winning CCL) will not result in them recouping their $10M investment.
Even spending less and hoping to "flip" the player will now be seen as risky thanks to the Kaku debacle. Not to mention Jorgensen.