The United States Postal Service will insure packages you send through them. That doesn't really make sense. We're paying them extra in order to cover them for their mistakes. That's a nice racket. I wonder if they've gone to the point of figuring out what the optimal level of package loss/destruction is in order to maximize their revenue and profit from insurance. I wouldn't be surprised.
I wonder how we'd go about deregulating the postal service. The problem becomes the "last mile," in many ways like the local phone service deregulation. Presumably there would be multiple mail delivery trucks coming to each residence/place of business. Or maybe it would be on a neighborhood basis. It's simple enough to demonopolize the backend, but the last mile makes it difficult. Something to think about, though.