Further to this discussion, I just posted a link to an excellent interview with Ezra Levant where he discussed why a pure libertarian approach (just build a better "x") cannot work in situations like we currently have with the Tech Giants. He talks about how this is reminiscent of the monopolies J D Rockefeller had with Standard Oil and owning the rail, the steel and the coal mines.

See https://steemit.com/informationwar/@apshamilton/excellent-interview-discussing-big-tech-censorship