Imagine the situation: a referendum reaches a decision that the elected government, for whatever reason, can't stomach. Could they refuse to implement the mandated policy? They may have very good reasons for doing so as the situation may have changed or new evidence may have come to light. So I expect that this would be a possibility. However, the government would have to look to their own re-election and the public could use Interactive Democracy to bring that date forward.
In this way Interactive Democracy provides balance between the wants of the public and delivery by government. And it provides a balance of power between elected rulers and the majority.