With a business website you are now open twenty four hours a day, and now have millions of potential customers in Nigeria and billions worldwide.  If a business sells products they can sell them online making money even when the business is not open.  Selling the products online requires virtually no overhead besides the initial cost of the website hosting and designing.  Why would a business not want to open their products and services up to the world?

Is obvious Website is way to let business be known to the world.
Unfortunately, some individuals still think is meant for Big companies.