Ultimately, the corporation is operating (and gets legal support like corporate personhood and limited liability) because the public
permits it through the state approving its corporate charter. The public allows the company to exist, and in exchange, the company is supposed to serve at least some vague public good. Technically, the public has the power to revoke the company's charter if that's in people's best interest.
The general public are all stakeholders that are affected by the actions of the corporations they allow to exist. They ought to have a say. In practice, we as a people have pretty much given up that say, and the world as it exists today is the result: Corporations running amok doing whatever they want, answering only to shareholders.