12 Why does each of these service stations have so little control over the price of the petrol it sells? Two service stations stand on opposite sides of the road: ABC and XYZ. The owner of ABC doesn’t even have to look across the road to know when XYZ changes its petrol price. When the owner of XYZ raises the price, ABC’s pumps are busy. When XYZ lowers its prices, there’s not a car in sight. Both service stations survive, but each has no control over the price