Cloudflare sells DNSSEC services. Comcast is actively participating in standards that moot the most (or second most) important modern application of DNSSEC. You keep talking about 9-10 million domains "presently signed", but, as I keep pointing out, those were signed at registrars and are overwhelmingly irrelevant zones. The point of the infographic is that zones people actually care about --- not coincidentally, zones with giant, smart security teams --- resolutely avoid DNSSEC.