It's also something we did in Canada as well. There were good reasons to make sure that the postal office had their pensions well funded. They're most likely to be disrupted by technology. We expected email to eviscerate traditional post, and it has, but for now package delivery and spam mail are making up the shortfall. Even so, it isn't too hard to imaging a post office that runs at a fifth of the workforce once we get more competition from autonomous devices.