I don't think they are worth billions. Most info suggests combined they are prob worth a few hundred million but a lot of that is on paper via the value of their shareholdings in their companies. They said up front that they were not willing to chuck away their fortunes on the Club, more like...
1. The rules don't change for 2 years.
2. Brighton have been making losses for years
3. Whatever FPP adjusted accounts look like they don't change the real world losses that your Chairman have to bear ie why on earth do any rule changes on artificial accounting mean you will have more money to...