Economics : how stockpiling some goods can sometimes lead to an increase in revenue
the effect of changing supply when the demand at a given price also changes
for some products like rice, which is the staple food in Bangladesh, people are willing to pay that extra price that has been brought up by creating a shortage in supply.
therefore, the price people are willing to pay for a given quantity no longer remains constant and the result of which is that the suppliers get to make money from hoarding stuff like rice as the revenue increases with the decrease in supply.