/lit/ - Literature

Why is almost all high fantasy so low-concept? Every blurb I read sounds like:

>in the land of Clichéa, a guy sets off on a quest to do a thing
or
>the above but with DINOSAURS

They all sound like the same thing. I'm sure many of them are great and unique books but all they have going for them is someone's recommendation - "check it out, it's high fantasy and good". Considering how many of them are also part of doorstopper n-logies, I rarely take the risk to try them.

Sci-fi and low fantasy doesn't seem to have this problem, I usually know whether or not a premise interests me from the start.