Oh yes my friends, this is a serious question! Try to go one day without using the internet. That means no cell phone 3G usage, no emails, no checking your social networks, aka Facebook, Linkedin etc, or even checking out your company website. This will be hard on your business.
Just imagine, you are sitting in your office working on a project for your company, when all of a sudden your internet goes out. You frantically push every button possible on your laptop, turning the computer upside-down looking for more buttons you did not even know were there, realizing there is no hope, the internet is down. Every business owner dreads this day.
All you want to do is write a blog for that new product of yours, but you need the internet to do so. This blog will be nonexistent and there would be no way for the consumers to know about your new product because there is no internet to post it to! How frustrating!

As the days go by and there is still no connection to the electronic world, you will realize how reliant your business is on the internet. Think about it. Without internet, consumers would not see your company, leading to a drop in sales (especially if you are an internet based company), your emails from clients, consumers and business partners will go ignored for days causing you to lose even more business.
After a few days of this nonsense goes by, you realize how much you miss the internet and how reliant of the internet you really are. To have a successful business, the business must be known. A business that does not contain a website, contains no identification.
The internet is not just another thing used in everyday life as a business owner, it is your business.