What you're asking for is the system we already have, except at a micro level rather than a macro level. Rich people buy out newspapers to signal-boost their own preferred messages to the public.
I think it's questionable that the "news that people feel is actually valuable" is what really ought to be spread. Some of the most valuable news is local reporting on the daily business of municipal governments. Regular people are notoriously uninterested in local politics, despite the outsized impact it has on their lives. Many of the most mundane decisions made in municipal councils go completely unnoticed yet they can destroy whole communities in the long run.