Yeah you need a way to automate services so that you do not have to manually pay a person for a service say you want to gain access to a building let's say its a nightclub that allows only people who have paid a fee to come Inside it would be very tedious and boring to have one person wait outside the building and take money from people. Also the money would go to whoever is assigned to standing at the door and not the person who built the building. That is one example another would be say you want to build a fleet of automated taxis where a person would get in and pay, then select where they want to go and it would take them there. It can add a whole new business sector to the game, the service industry