Is it possible to earn through local marketing? Of course, yes. Is it easy to earn through local marketing? Yes, if you know how to go about it.
Systematic approach to your business is important and you need to understand the pros and cons of establishing a business serving your local market. You should be able to anticipate problems and prepare yourself well in advance.
People who have already done business in local markets, people who have experienced the ups and downs of local marketing can teach how to earn maximally from local markets.