Less fuel is more profitable than more fuel for the same food... so yes industry cares about profits first... which is exactly why your scenario of agriculture that uses less fuel means more profits. Unless its wasteful of other resources that arent fuel, then its less desirable.. which means less resource effiency but also less profit.
This clinging to the idea of money and profit meaning bad is a huge gaping flaw in your logic.. not to say that maximizing profit at the expense of all else is always good, its not... but more often than not it tends to be a good system.