&gt; Your argument about mangoes has a very big assumption involved and that is the supplier wants everyone to have mangoes and isn&#x27;t in the market just for the profit &lt;<p>I thought someone would raise this point. If the seller is in the market for making the maximum amount of profit, then he would sell his mangoes to the highest bidder at maximum profit, then use that money to expand his business to sell more Mangoes to make every last bit of profit from Mango sales. Correct?<p>I assumed that everybody understood that selling goods to the highest bidder is what a person motivated by profit does. So all I did was assumed that the seller wants to benefit maximum number of people. By performing that thought experiment, I showed that even THEN he would do the same thing as the person motivated by highest amount of greed would do.