My feeling is that since Facebook has a monopoly on being Facebook, and Twitter has a monopoly on being Twitter, and since these companies have an interest in n

My feeling is that since Facebook has a monopoly on being Facebook, and Twitter has a monopoly on being Twitter, and since these companies have an interest in not being gamed by the KGB, Macedonian teenagers or anything else, they should keep up research on using data science to identify disinformation and rank it accordingly in the feeds they serve. It would be a good start.