And you are arguing that customers become mindless drones that don't need to think about any consequences when they consume. Which is exactly why we have fucked up the climate.
Coming back to the purification plant, that's the same thing if everyone would go shit in the Neighbors garden and flushing down anything down the toilet. We don't do that, because we know it would fuck up the purification plant, clogg the toilet and turn the garden in to a literal dump.
Choosing what you buy is also the same thing as choosing what to eat. Sure, if you don't know any better you may just eat junk food all day long. But the consequences are going to haunt you very much.