The reason that Alaska doesn't transition to a post-oil economy is that Alaskans don't think like that.  Historically, Alaska has been boom-and-bust territory, and that doesn't foster public policy that takes the longer view.  Your professors and consultants can create as many utopian long-range plans for the state as they want; when it comes to Juneau, it's know where your bread is oiled and stand by your tribe no matter what.