Am I the only one who is mystified by this whole idea? People aren't CPU's. Good luck getting them to follow the code that you thought you were using to define their roles. On the contrary, what makes any complex system work is flexibility. And yes, if that calls into question the whole regulatory regime some companies (believe they) live under ... well, yes.
Also, would you even want it to? I've worked for companies with very rigorous compliance before. They are dead companies walking in most cases. As soon and their business model required/requires any significant change, they are toast. This is because these types of rules can't possibly cover all cases, just the ones the managers know about. Innovation requires flexibility and creativity and rules based systems are the opposite of that. By their very nature, they introduce the exact situations the rules can't cover.