> Because there is far less motivation to be efficient and well-run. On its face, this seems like a simple problem to solve. In practice, I can see how it woul

> Because there is far less motivation to be efficient and well-run. On its face, this seems like a simple problem to solve. In practice, I can see how it would tend towards inefficiency with the tax system you've proposed. Other posters have tackled the question of monopoly/duopoly/oligopoly. In practice, I can see how markets tend towards oligopoly. It would be nice if we had systems that would tend towards high levels of the kind of efficiency that we want, but I think we should actively manage all of our systems for optimal results. This would mean keeping government organizations accountable for costs versus benefits as well as keeping markets competitive. If the USPS is losing money on every letter sent, maybe it could put itself out of business by encouraging alternatives to physically sending letters. This is a behavior that would not be encouraged by a private sector company.