We used to have laws that decentralized control of media. An entity could only own a certain number of newspapers, tv stations, or radio stations. There were incentives for smaller news companies to insure that there was competition in each market. Congress kept chipping away at those laws letting larger companies buy up more and more of the market, allowing mergers that restricted competition. Now radio is nearly a monopoly, TV and newspapers are oligarchies. The Internet fell into an oligarchy disturbingly quickly.
The only way to get the media serving the people again is to break up the big companies and restore the guardrails that protected and supported small local companies.