Do business managers have a commitment to anything more than the success of their company and to making money? It would be hard to say that they do. Indeed many business leaders deny that there is any conflict between self-interest and the interests of all.
If the jury have no right to judge of the justice of a law of the government they plainly can do nothing to protect the people against the oppressions of the government for there are no oppressions which the government may not authorize by law.