the "Hobbit" movie . . .
Possibly a good thing, but rather a depressing reason. In an ideal world, lawsuits would have nothing to do with decisions about art.
Oh, and regarding the "two movie" thing, apparently the studio is planning a single Hobbit movie, followed by a second movie "drawn from footnotes and source material connecting The Hobbit with The Lord of the Rings."
Feel free to speculate on the appalling possibilities this opens up . . . .