I am reading this intersting book called "The One Minute Entrepreneur" by Ken Blanchard
They made a very interesting point that was also pointed out in MBA school the very first year.
When entrepreneurs start a business, 40% of the businesses fail within the first year, 80% of the businesses fail within the first 5 years, and 96% of the businesses fail within the first 10 years.
This is because these businesses are started by technicians, writters, electricians and such. They continue to do the work they are skilled at, while ignoring other vital parts of the business.
I believe the author is right on the money.