I think this is mostly due to services like Disqus targeting the CMS space like WordPress or Squarespace heavily, while at the same time making deals with estab

I think this is mostly due to services like Disqus targeting the CMS space like WordPress or Squarespace heavily, while at the same time making deals with established online presences like online newspapers, etc. Essentially, while it may seem trivial to you or me, we aren't their target user, they want low hanging user fruit. Eg, copypasta this one line and it all works!