Final answer:
Family-owned media have declined due to media consolidation, where a few companies control the majority of media outlets. This limits the diversity of information and viewpoints available to the public.
Step-by-step explanation:
Family-owned media have increasingly declined in number because of media consolidation. Media consolidation is a process in which fewer and fewer owners control the majority of media outlets, creating an oligopoly where a few firms dominate the media marketplace. This consolidation has led to a decrease in the number of family-owned newspapers and radio outlets as they have been acquired by larger conglomerates. Today, just a few companies control the majority of media outlets, limiting the diversity of viewpoints and information available to the public.