On the technology assisted, ideologically driven narrowing of acceptable and permitted topics of speech. You're naive if you think this has "nothing to do" with the shutdown of online free expression on cannabis. https://www.nytimes.com/2018/05/08/opinion/intellectual-dark-web.html The key takeaways are: This politically driven wave of censorship is, in fact, against the tide of market forces. Shrewd entrepreneurs are seizing the opportunities it represents, and often profiting. But anyone familiar with increasing returns to scale economics, and the rigid, unforgiving corporate cultures of the dominant monopolies -- fiercely opposed to individual privacy and freedom -- should be terrified.