Which of the following is a disadvantage of common use terminal facilities?

The selection of reducing the effectiveness of branding for airlines as the disadvantage of common use terminal facilities is insightful. In a common use setup, multiple airlines share the same terminal space and resources, which can dilute individual branding efforts. Airlines often invest significantly in branding to create a specific image, enhance customer loyalty, and provide a particular experience to their passengers. However, with common use facilities, the opportunity for airlines to showcase their branding through kiosks, decor, and signage is minimized. This can lead to a more uniform appearance where distinguishing between different airlines becomes challenging for travelers, ultimately affecting brand recognition.

Other options highlight different aspects of common use terminal facilities, but they do not directly address a significant detriment to airlines' marketing and customer relationship strategies as strongly as branding does. For instance, restricting access to passenger services may not be a direct consequence, and while increased complexity in ticketing systems could arise in certain contexts, it does not showcase the branding impact as clearly. Similarly, the number of baggage claim counters is not inherently increased by the common use model.