So privately owned companies can be directly controlled by their owners in proportion to the amount of ownership. Publicly owned companies cannot usually be directly controlled by their owners, but can be indirectly controlled in proportion to the political power of the owner.
In a private company, you have no chance of appeal. In a government, you at least have elections. The worst most corrosive parts of our government come from its contact with the wealthy and the corporate sector and those aspiring to become them.
In theory I wanna agree with you, but in practice, "representative bodies" often represent their corporate masters far more than they do the will of the people.