I think that normal people internalize a multi-layered context of ethical rules. Following the letter of the law is only one layer. Hence most people would not say "fair enough" just because regulations were followed, if the meta-rules of society were not. I don't think it is possible to do away with meta-rules by writing more detailed laws, although I get the impression that is an increasingly popular assumption. In my opinion, the ubiquity of computers leads to an overestimation of our capability for directly handling complexity in rule-based systems.