“A business model is a kind of formal or informal framework that exists in an organization to create social, economic and other forms of value and intends to represent some strategic aspect of business like trading practices, operational processes, infrastructure establishment or other policies and practices.
Pyramid Business model is one such example of business model which comes in the category of non sustainable business model. It involves exchange of money amongst of people by enrolling them into the scheme. In such a process no product or service is delivered. This model is illegal in many countries.