That's... not how markets work... Discounts are often given to build relationships: Gillette razor handles are sold at a loss, so you'll keep buying Gillette r

That's... not how markets work... Discounts are often given to build relationships: Gillette razor handles are sold at a loss, so you'll keep buying Gillette razors; my loyal mechanic is willing to sell me a used car at a smaller than maximum profit, since he knows I'll come to him for service; I'm willing to sell my labor for less than the maximum, in order to work on an exciting project that will greatly advance my career. Short-term profit is often the enemy of long-term profitability.