Discovery of crude oil will be a ground breaking discovery but not in financial terms. You non technical big mouths speak because you do not have to pay tax for your words. What made you think US may export crude oil from Mars and establish monopoly in oil market?? Do you chicken heads have any idea of the cost involved in that?? Who will buy Martian oil at the rate of 10000$ per gallon??
Discovery of crude oil will confirm that life flourished in Mars in distant past as all fuels , be in coal or petroleum are originated from living beings. Thats a remarkable discovery in itself.