Yes, considering the oil company doesn't own the gas station and still gets paid for the fuel. The person you're stealing from is the owner of the gas station who purchases the fuel and then in many areas sells fuel with very low margin in hopes of you coming into the store for snacks and drinks to make money on higher margin products. So even if they are selling a large amount of fuel, they aren't making a lot of profit to make up for the theft.
Yes, considering the oil company doesn't own the gas station and still gets paid for the fuel. The person you're stealing from is the owner of the gas station who purchases the fuel and then in many areas sells fuel with very low margin in hopes of you coming into the store for snacks and drinks to make money on higher margin products. So even if they are selling a large amount of fuel, they aren't making a lot of profit to make up for the theft.