Only in your fantasy land.
Great hyperbolic story about "evil corporation$" but not remotely close to what would really happen. If you tried to do what you claim, you would find the regulation, permitting, and legal requirements would far outstrip your ability to meet them. You want to build a plant by a river? Hah! The EPA says otherwise. You want to handle poisons? Hah! OSHA will be all over you before you start. You want to put water back into a river? Go see the EPA again. Wash, rinse, and repeat until all government bureaucrats for all government agencies are satisfied.
Translation: you wouldn't even get to step 1 of your diabolical scheme because the world does not work the way you describe, even though it sounds great