In a booming economy like India, where high-speed internet penetration has reached almost all of the 1.5 billion people, it is only natural for start-ups to go after a large user base from the get-go. But, as we have seen in many cases, the cost of user acquisition in business-to-consumer start-ups can often outweigh the potential revenue brought into the fold by new users who stay. This is especially true when companies are trying to establish new business models.