CASC member GoDaddy cold-called a random musician with an HTTP site and told her the only way to avoid an SSL warning from Google would be to pay them $200+: https://www.facebook.com/rebecca.ann.925/posts/1740244236062...
I can see why Digicert would want to run from the CASC and keep their reputation safe.
(from Ryan Sleevi of Chrome's crypto team https://twitter.com/sleevi_/status/1012338888088719360 - searching for his other interactions with the CA Security Council is pretty enlightening too)