Under the existing system, then, we save in cost of service over competing systems under private direction, in that the existing facilities are all made use of. There is no waste by setting two men to do the work of one, or by renting two offices to do the business which one could accommodate, neither is any energy wasted in soliciting business. The capital invested by the government in its plant for carrying on the postal service would bear interest, if the money were borrowed, of not more than two or three per cent. But if a private company borrowed money to carry a similar business, they would have to pay five to seven per cent., which they would have to make up for by charging a higher rate of postage.
Other monopolies which have been carried on by the government are the business of transportation, and the provision of roads, bridges, and canals therefor; monopolies in mining; and in the case of municipal governments, as already noted, the supply of water, gas, and electric service, and street railway transportation.