Well, if you're talking about originality of plot, there is no such thing in any writing genre. ... That doesn't mean that writers can't be creative in defining their fictional worlds and characters that inhabit them, nor does it limit nescessarilly their creativity in writing possibly unexpected twists.
Raymond Feist's Riftwar novels (at least the first five, I haven't read the rest) were interesting reads.
Are you incapable of growing tired of predictable and unavoidable prophecies, insanely powerful wizards, that damned apparent struggle between good and evil, and a few different humanoid races to make characters seem more interesting?
... mindless, unwarranted following of the genre ...
The publishing industry tries to sellect stories based on what seems to sell best at the time. Hence when something unexpected does make bigger ripples and grabs the attention of more readers than the last fad, the publishing industry is quick to promote to excess that success, and attempt to duplicate it with as many other stories of similar content as can be gotten away with.