Why are point-to-point connections impractical in a large network such as the telephone network?

Point-to-point connections become impractical in large networks like the telephone network due to the exponential growth in the number of connections required as more users are added. Each user would need a dedicated line to every other user, leading to an unmanageable number of connections and increased costs. Additionally, this setup would be inefficient in terms of resource utilization, as many lines would remain idle at any given time. Instead, centralized switching systems allow for more efficient communication pathways and resource management.