Most people are after of money when doing business they do not consider the most important thing in marketing their product or business which is to "care" other people especially customers.
Most successful business people in the world took good care their customers and not after the money. Successful people became what they are now because of caring other people which are their customers, they do very good service that is why people give their trust and become loyal to what they offer and of course income will automatically follows.
This is one most important skills an entrepreneur must have.