Such a company did exist and was called the Pony Express. What most people don't know is that the Pony Express lasted for only one year. It was displaced by new technology. That technology was called the telegraph and was perfected by Samuel Morse, who also invented Morse code. Being more efficient is not always the answer.
Entrepreneurs have to take a strategic view of what is most important.
Sometimes just getting more efficient won't solve the problem. You have to catapult your thinking into a totally new dimension. You have to see things as you have never seen them before. To develop a strategy requires several steps. Realize things change .