Granted the ability to deliver directly to homes may face years of legal issues, like self-driving cars. However, there are plenty of problems that can be solved today by current technology, or products that are 12-24 months out, where you don't need FAA approval, like in agriculture.
http://www.forbes.com/sites/rakeshsharma/2013/11/26/growing-...
http://techcrunch.com/2013/09/26/3d-robotics-raises-30-milli...
Granted the ability to deliver directly to homes may face years of legal issues, like self-driving cars. However, there are plenty of problems that can be solved today by current technology, or products that are 12-24 months out, where you don't need FAA approval, like in agriculture.