Or maybe not that subjective when looked at closer. It may just as well be a saying that the entitled classes use to defend their selfish and less than good behaviour. Beacause the classes of the not-entitled buy this as somehow having reasonable meaning.

The entitled classes have no reason to change rules that are clearly stacked in their favour. But it sounds way better to say the rules cannot be changed. But it is hard to see why this should be self-evidently true.