Core Viewpoint - The article highlights consumer dissatisfaction regarding limited seat selection options when checking in online for flights, attributed to airlines' introduction of "mileage redemption seat selection" and "paid seat selection" services [1] Group 1: Consumer Rights and Fair Trade - Airlines previously reserved seats for specific groups (e.g., elderly, mothers with infants) for safety reasons, which is deemed necessary [1] - If seats are locked solely to encourage consumers to pay extra, it may infringe on consumers' rights to fair trade and informed choice [1] - The pricing structure for seat selection should be transparent, with clear rules and standards for any fees charged [1] Group 2: Industry Practices and Market Dynamics - The practice of charging for basic services without enhancing the service quality raises concerns about fairness in the airline industry [1] - Similar issues are observed in other industries, such as video platforms and home appliance repair, where concentrated market structures lead to consumer exploitation [1] - Regulatory bodies are urged to establish clear guidelines on what fees can and cannot be charged by companies [1]