@Tim_Eagon@Rollenspielblog My guess is that people who classically went in for Call of Cthulhu-style experiences weren't really interested in the PbtA-style experiences, and Chaosium hasn't had a significant enough scandal that got traction in public to push people away from their products (unlike Hasbro/Wizards), so there's not been market pressure to go discover other things.
Super heroics have always been a pretty market diverse silo, Blades did something very specific and very strong while introducing an excellent description of the mechanics themselves, Monster had the advantage of effectively being Buffy and putting relationships upfront as first-order mechanical objects… But Cthulhu has Call of Cthulhu which is probably best described as "adequate."
And "dominant."
It's hard to see something else slipping in there without a significant change.