The answer as to whether you can make money at it depends on how skilled you are in a multitude of disciplines. No one here can tell you. It's something that depends on how much effort and work you put into it, and how viable your business plan is. If you don't have the money, time, or will to devote to this project then perhaps the answer is zero, it's not for you, get a job working for the government. If on the other hand you are willing to invest your time studying, researching, investing MONEY and TIME then you have a chance.