What was a significant consequence of the nonstop coverage of JFK's assassination on network news?

The significant consequence of the nonstop coverage of JFK's assassination was that it caused networks to evolve into 24-hour news services. This tragic event led to an unprecedented demand for continuous news coverage. As networks responded to the public's appetite for information during a national crisis, they realized the importance of being the primary source for breaking news. This incident highlighted the necessity for around-the-clock reporting, which eventually resulted in the establishment of 24-hour news channels.

The other potential outcomes, such as a decrease in advertising revenue or financial losses for networks, do not reflect the overall growth in viewership and advertising that came from providing extensive coverage of significant historical events. Public interest in television news actually surged during this period, further cementing the role of television as a dominant news medium.