It got to such large scale in India due to these factors- 1. People have fear of what will happen with them, they desperately need reassurance about the future 2. They want to get the best outcomes always- be it love, money, marriage, job, business. Hence, they believe in the products they sell. 3. All the above points become valid because indians are highly emotional people and believe way beyond god and love religion. I have experienced working in this industry, so, I know a lot of insights about the customer behaviour here.