Hi Dien,
This is the definition that I have gathered upon searching for the right definition of perfectionist .
what is a perfectionist?
A perfectionist is someone who expects much more from himself beyond the normal standards, he usually sets very high standards for himself that he never meet and so ends up with a degraded self confidence. example of perfectionist's standards can be:

* ill never make mistakes
* everyone shoud love me
* ill score 100 percent at all exams
* i should be perfect

Based on the definition, perfectionist doesn't want to commit mistake/s, and one of the imperfections of a business is/are committing mistake/s. Mistakes are there to teach us valuable lessons, lessons that will lead us to become a stronger person. Perfectionist for me will never become successful entrepreneurs. Why? because there mistakes will lead them in to their downfall.