Not sure if this is the right spot to post this. But last night I stumbled upon a great guy who really can help you start up a commercial drone business for very little money. Right now he is only asking for $50 to join his Facebook group. After looking around I was amazed with the files and info he posts. Just have a look at his website and see if the topics he covers could help you start a drone business of your own. I am not affiliated with this dude at all. I just thought for the money you will get some great info.
Professional Drone Association
Professional Drone Association