Web Arguement

I am doing my web arguement on e-commerce. How has E-Commerce affected the traditional way of business prior to its presence? I think that e-com has greatly helped out a lot of business's acrossed the world. They are able to sell a lot of products faster. They can even sell their services over the internet. Any company, and products, and services can be sold over the internet. There is a market avaliable for everyone online. Any products that people either want or need are bought over the internet. It is a great place to do buinsess and it is very cost efficent. How much does it cost to lease a store front and try and run a store out of it? And, what happens if you don't sell your products or services? Then you go out of business and lose money. Now on the otherhand, how much does it cost to run a type of ecommerce business? Not very much.