I'm not sure what that could be, but a general answer would be that neither faction wants too much scrutiny. They would therefore have mutual self-interest in maintaining a system where they can keep crappy records (or none) while still keeping mountains of money.
I mean maybe. They probably are doing everything they can do maximize their own budgets, but not so hard that they might expose themselves to more oversight or regulation which means the no real change to how the system operates.
I'm not sure what that could be, but a general answer would be that neither faction wants too much scrutiny. They would therefore have mutual self-interest in maintaining a system where they can keep crappy records (or none) while still keeping mountains of money.