Not really sure.
That said, a lot of this show being able to prosper seems like it hinged on the possibility that the general public would tolerate the show taking it's own sweet time getting to "The Immortal Iron Fist"(which is where it seemed to be heading).
While you might have a portion of the "Comics" crowd that would be forgiving on that front, I'm not all that shocked that Joe/Jane Public didn't really stick around for it.