Going after every possible case would be staggeringly expensive for marginal gain, the cost society would massively exceed the benefits. Yes the system as it is

Going after every possible case would be staggeringly expensive for marginal gain, the cost society would massively exceed the benefits. Yes the system as it is that relies on discretion, but there’s always discretion involved, and we rely on separation of powers, public pressure, etc to act to try and correct excesses. Of course that is not guaranteed to work, and won’t work perfectly, but no system will. Societies are dynamic systems.