Or by selling things people don't need but for some reason think they need to have.
Maybe that is where the focus should be.
Food is usually a good source of money to start a business. Restaurant, food store/market or to sell meat directly to people. If you choose a meat that has a good price in your country the profit is even bigger. People need food to survive, and they need it every new day, so there will be always a customer ready to spend some money with you.
Nondurable goods are very good to sell, it's an eternal cycle of sellings to the same person (if you offer quality, of course).