There's no need to put Exxon in jail. Exxon is what the C-level executives make it. If they decide that Exxon is going to break the law (or permit it to happen)

There's no need to put Exxon in jail. Exxon is what the C-level executives make it. If they decide that Exxon is going to break the law (or permit it to happen), and are held personally responsible, that is all you would need to do to see a large change in behavior. Shareholders are too far removed from personal responsibility, and holding them responsible beyond the financial risk they already carry would basically destroy the rationale for the existence of limited liability corporations.