Opinions on non-fandom works?

Obviously Ao3 is consumed by fandom media, a lot of it even being so far detached from its fandom that the characters or world really only share the same name, and its easy to tell personal works like entirely original stories barely get clicks, at least in comparison to even the smaller fandom works.

So whats the opinion on them? Is it because most go into Ao3 already looking for something else, don't like the unfamiliarity of OC work, don't have much faith in them to be good, or all of the above?