Simple. Given the costs it's cheaper to bribe everyone and cover each other's kiesters when a problem DOES arise. Any attempt to use a third party (including the government itself) can have the same result because it could be THEIR turn in the hot seat next.
IOW, it's a cartel. No one wants to play by the rules because it saves mucho dinero to cheat. And with the money involved, they can play the lawyers, judges, and lawmakers to smooth over any issues.
Biting the hand that feeds IT
