<i>especially when the vendor is a monopolist or oligopolist, as is the case with CAs.</i><p>There are hundreds of CAs. It&#x27;s one of the least monopolist businesses in that regard.<p>As to your other points, have you seen <a href="http:&#x2F;&#x2F;slatestarcodex.com&#x2F;2015&#x2F;07&#x2F;22&#x2F;freedom-on-the-centralized-web&#x2F;" rel="nofollow">http:&#x2F;&#x2F;slatestarcodex.com&#x2F;2015&#x2F;07&#x2F;22&#x2F;freedom-on-the-centrali...</a>? It makes a similar point IMO.