Most of people working in companies are people with high education. And not all people have it, that is why some people choose own bussiness. Also jobs in organizations demands not only education, also some skills and health. If person do not have any skills of chatting or talking with person, clear speech, accepting them to company can be very hard. Because, customer satisfaction and comfort, is very important for them. Opening an own bussines depends on phsycology and character of human. For example person who hates to depend on someone or person who always dissatisfied with their salary usually create their own job. Some times they follow and continue their fathers job.