In a way, you could say that Loki was bound to fufill a prophecy. As the cosmological poem Voluspa tells us, when Loki frees himself from his bonds, the doom of the gods will begin. So Loki has to be bound so he can get free and lead the giants against the gods.
One of the most convincing explanations I've ever seen for Loki's behaviour in _Lokasenna_ is that he wants the gods to bind him so that he can bring on the end. His first step in that direction was to kill Baldr, so now he has to force the gods to doom themselves. (John McKinnell's "Motivation in Lokasenna" is one article that takes this view. You can see the pdf here.)