This is the whole reason gas tax exists, and regulation. Government realizes that manufacturers are not paying for these negative externalities, and therefore forces them to pay, or follow a regulation, or discourage consumers from buying the product. It is the only way for this to work in a capitalist society.
You can blow this up to a trade debate too. To make a shoe in Tulsa, means I have to pay disposal costs for all the chemicals I use. I need to have proper ventilation for my workers so that they don't get cancer from the toxic glues I use. I can make the same product in Mexico or China and avoid these costs. However, the Mexican or Chinese society will pay for these costs in terms of environmental clean up later on, healthcare cost to sick employees, reduced quantities of clean water and clean food because of pollution.
That's part of the reason an imported product costs less to the importer. They are only paying for the material, not the negative externalities.
So is profit bad? No...but profit purely because of avoiding paying for negative externalities can be.
On another subject, I just found this tidbit at the BBC:
I heard recently that US government policy at all levels is based on providing Americans jobs. Ethanol policy seems to be as well!If ethanol is imported from the US, it will likely come from maize, which uses fossil fuels at every stage in the production process, from cultivation using fertilisers and tractors to processing and transportation. Growing maize appears to use 30% more energy than the finished fuel produces, and leaves eroded soils and polluted waters behind