Seems like a hard business proposition. Huge infrastructure investment upfront, heavy maintenance needed, you get a very inflexible system, etc. Not to mention, what happens when Amazon uses 99% of the capacity and you can’t get your package through?

It’s hard to beat trucks and minimum wage drivers (and everyone’s hoping that the “driver” part of the equation will be removed sooner rather than later)

If we’re going super future, drones seem more plausible.