This
   article  [1]https://www.youtube.com/watch?v=UzqniEaXwQg&feature=youtu.b
   e    has the headline: "Congressional Democrats Threaten Big Tech To
   Censor Americans Or Else"

   If this kind of government-threat can exist, then one solution is to
   declare that communications over the Internet within wires (and fibers)
   located within the United States are governed by the First Amendment of
   the US Constitution. Private companies are availing themselves of a
   system initiated by a relatively small amount of government research,
   and developed by other designers and manufacturers.

   If 'private companies' wish to communicate over systems OTHER THAN the
   "internet", they are free to design that system, implement it, and the
   First Amendment WON'T apply to them.
   I'm not sure that this would really qualify as a "libertarian
   solution", but it is dangerous that "government" is trying to extort
   organizations like Facebook and Twitter to engage in censorship. This
   possibility must cease.
                   Jim Bell

References

   1. https://www.youtube.com/watch?v=UzqniEaXwQg&feature=youtu.be