Of course you are right but it is very important to have a plan before starting any business.It's like a human being has a red bone in his body and a human being can't do anything.And it depends on your business What kind of businessA lot of people start their business without following the bookish instructions. And some of the time they are successful with it. You can see that people need to make use of the business plan. And some of the time following that approach helps them stay focused. And they can improve their business by finding out what went wrong with it.
Do you think business plan is necessary?