Just utterly insane money. Think back to about 1995 when top, top players were earning about 20k a week and transfer fees were just about reaching 10m. That was insane back then, but this is a completely different level of outrageous.
You cannot spend that money, what do you do with 250m when you already have as much money as you can ever spend already? Sure you can buy more houses, but what's the point? You can't travel every week, and even if you could you'd just stay in a penthouse suite at an amazing hotel anyway.
That money to these owners really does mean nothing at all, and the countries they represent, it's all pretty sickening when you see their sportswashing played out before your own eyes, with the organisations deemed there to protect the integrity of the game more than happy to allow it so that they receive their cut.
Obviously no blame attached to Mbappe for gladly taking their money, like, especially when Madrid are a pretty terrible side nowadays.