50% of India's GDP comes from the unorganized sector employing 90% of India's workforce

50% of India's GDP comes from the unorganized sector employing 90% of India's workforce. 

The science, art and cognitive abilities involved in sales and marketing, knowingly or unknowingly, are far more complex than what people who have never had a hands on experience in even selling a 'churan' worth ₹0.50 can even dream of. 
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* Marketingpundit 
* MarketingGyanology

Buying, selling, being sold

Buying is a pleasurable process where you happily exchange money for something you want or need. 

Selling, on the other hand, is an uphill process of trying to convince someone that they want or need what you have. It's all about overcoming objections, coercion, manipulation. 

Likewise, being sold is not enjoyable to a customer. That's why people have built-in sales resistance, that's automatically and unconsciously triggered at any attempt at selling them.