The main reason why you or any enterprising person organizes a business is to make money. You do this by earning more money than you spend. The amount of money left over after subtracting your business expenses from your business income is known as your profit. In the free enterprise system, business firms try hard to keep costs down and increase their income from sales. The better they succeed at this, the higher are their profits.
Economists describe the efforts by business firms to earn the greatest profits as the profit motive.
Competition Just as you are free to start a computer business, so is everyone else. The rivalry between sellers in the same field for consumers' dollars is called competition. If your business is profitable, it is likely that others will enter the same business hoping to be as successful as you are. They will be competing with you for the same customers. To win a share of the computer business, other sellers may try to offer more and better services, or services at lower prices.