Building a company requires skills that many, including myself do not have. You have to be able to sell. You have to be good with people. You have to be able to convince at least your friends to work on the idea with you. You have to have a good idea. And, you in the end you stop coding, and start worrying about business things. I like to code. I wouldn't mind owning my own business, but I haven't the skills and I haven't an idea so good that it would compensate for my lack thereof.