Today a business that doesn't have a website will have a huge problem selling even if their product is great. The internet has become such a powerful force in our consumption habits that not utilizing its potential could be detrimental to the chances of success.
A website is like a business card. It's the first thing people see and its the first impression. In many cases it will determine whether a person will seek more information about the product or simply move on to the next one.
Some companies actually sell a great deal through their website. This gives people living far away a chance to purchase off the website without stepping out of their homes.
The future is in the internet and whoever won't keep up with the pace will fall behind.