In fact, it is a better business to be in since the cost of starting is significant lower than a real business and the operating cost is lower as well. The FX business is also easily expandable since you will trade larger lots when your account size grows. The cost of infrastructure to run this business is also small. In terms of returns per project basis, the return is also pretty desirable if you maintain a risk reward of at least 2 for each trade.
By looking at forex trading in a business stand point, you also have to manage risk and money well to order to create a sustainable business model. You should never invest all your capital in an investment but spread out the risk , apply a sound approach to ensure business continuity.