The conclusion of Davies' second extract — about e.g. being bumped off a flight — is recognisable but the conclusions are actually wrong. The situation in these cases is actually more subtle. The person you're speaking to does normally have some capacity to escalate in exceptional cases. But they can't do it as a matter of course, and have to maintain publicly that it's actually impossible.
The people who get what they want in these situations are the ones who are prepared to behave sufficiently unreasonably. This is a second order consequence of 'unaccountability' that Davies misses. For the customer, or object of the system, it incentivises people to behave *as unpleasantly as possible* — because it's often the only way to trigger the exception / escalation / special case, and get what you want.