"I feel so irritated that for the rest of time every fantasy story will be compared to LOTR when Tolkien himself certainly liberally borrowed for his own story. "
I understand what you mean, Joey, and agree with Peter Jackson, not to mention Wood getting Frodo's character wrong. But I think the reason is because the enormous scale of the universe Tolkien created. From all the books he's written about middle Earth, and all the characters that he came up with, people feel a familiarity with it, and I think it was the first "breakthrough fantasy trilogy" to be published on that scale.
All Fantasy and Science fiction authors borrow from eachother, and they freely admit to it. They call it "the pot" where all the familiar fastastic things preside, and they can take from it and add to it at will, which I think is great, because in a way, it gives a sort of reality in the sense that everyone uses the same base ingredients, and it forms a coherency that is good for readers of the genre.
"I'm an American, Damnit!!! And if it's three things I don't believe in, it's quitting and math."