I think the broader society does always have a say into the private agreements of individual entities and corporations. This is called labor law. So technically

I think the broader society does always have a say into the private agreements of individual entities and corporations. This is called labor law. So technically, they do have a say. Of course I highly doubt that society would be willing to pass a labor law to limit the bonus of CEOs. But I don’t think that’s because society doesn’t have a say; I think that’s because society broadly doesn’t consider this objectionable enough to forbid.