Final answer:
A simpler ERD design may fail to adequately represent the complex needs of customers, leading to challenges in scalability and future adaptations, ultimately making it difficult to develop a system that meets all requirements effectively.
Step-by-step explanation:
A major disadvantage associated with a simpler ERD (Entity-Relationship Diagram) design is that poor design decisions made early in the development process can limit the ability to meet the complex needs of customers
Simplicity in design may fail to capture necessary details that inform the functionality and relationships within the database, leading to challenges in scalability and adaptations to new requirements. As such, while a simpler ERD might be easier to understand and communicate, its lack of detail and foresight can make it impossible to develop a system that successfully meets customers' needs in the long run.