If you could predict the financial development of any publicly listed company, you would be a stock market millionaire.
Why would it be easier to make a three year forecast for a startup that does not yet have products or customers?
The plan is simply far too optimistic and lacks necessary skepticism and risk assessment.
The other major problem is that these external business plans are useless as a tool for managing the company.
Unfortunately, most businesses do not create their plan before they need to negotiate with banks, investors or public authority support agencies.
This creates two major problems: first, the business plan is usually a set of arguments for the future success of the company.
Instead, you decide what you will have for dinner, and make a list of everything you will need to buy.
Some additional impulse purchases tend to find their way into the shopping trolley, which is normal.
In addition, most plans are created for the wrong reasons altogether.
People often create business plans to express a need for external financing or support for their business.