Company's function in respect to the shareholder is to earn him money. It's government's function to enforce environment protection. If company voluntarily enfo

Company's function in respect to the shareholder is to earn him money. It's government's function to enforce environment protection. If company voluntarily enforces more strict environmental norms than competition, and becomes less competitive because of it, it violates it's primary goal and should be sued by shareholders, not the other way around.