As you describe
@Heatman, everything is in the hard work accompanied by persistence and persistence. In this way you can reach business success and in turn learn from your mistakes to keep you going in the future, thanks to your experiences.
It is correct
@GIFTMICHAEL , According to the size of the company derive their benefits, and as you posted if they are large "generate higher revenues and its annual budget is also high". , for that you have to work hard from the beginning.
In my country they are classified as I described in the thread "Companies in the primary sector. Agriculture, livestock, fishing and mining. ...
Secondary sector companies (industrial). Companies engaged in industry and construction, i.e., the transformation of goods.
Companies in the tertiary sector (service sector)".
In each of them are the basic needs of man, food, housing and basic services.