The paper explores how a big company that controls a product may intentionally harm its competitors by making the product they sell worse. This harm only targets specific competitors, not all. It shows that the big company, even if it's more expensive to produce, still tries to hurt its competitors this way. This strategy cancels out some existing rules that were meant to prevent this kind of damage. The findings suggest that when new companies enter a market dominated by a big player, they might face unfair challenges. To prevent this, certain rules and transparency requirements might be needed for the big player, especially in advanced technology fields.