Final answer:
TV ratings and share points are crucial for the revenue they generate, influencing programming choices and advertising rates, especially among the desirable 18-49 age demographic.
Step-by-step explanation:
Television ratings and share points are most important because of the revenue they generate. Networks have a vested interest in attracting viewers, particularly those between the ages of eighteen and forty-nine, as this demographic is often the target of advertisers. High ratings can lead to higher advertising rates and more revenue for the networks. Popular shows often adhere to successful formats like situation comedies, police dramas, and reality TV because of their proven ability to attract viewers. Given the entertainment value of media and its reach into nearly every U.S. household, television remains a powerful tool for companies to connect with consumers.