There is now way anyone is paying tens of millions for a gelding that does dressage. For goddsakes, even a gelding like Cirrus des Aigles isn't worth that much and he has the ability to actually make millions, already has close to $7m in the bank.
The stallion is not worth in that range either. That would make him worth more than most TB stallions, and those horses earn $5-20m in stud fees yearly.
If he went to stud for $10k a pop, the absolute maximum he could get for a WB (Totilas territory, rarified air), he would have to sell 3000 doses just to break even. And if he had 3000 foals on the ground, then people ain't going to pay $10k to breed to him, as they'd be a dime a dozen.