Someone will need to start a factory to build those machines, someone will need to sell them, someone will need to install them, and someone will need to maintain and repair them. If you stop eating fast food, the grocery store will need to hire more people because people like you are shopping there more often. Or, more likely, you still eat there because the price difference isnt signifiant enough to change the decision you made that convenience is worth paying more for. If not, oh well. Business models go obsolete all the time. We survived the loss of the horse drawn carriage industry, we'll be ok if Wendy's can't make it, too.