If the U.S. decided to "sell" California to Mexico no shots would be fired.
Such transactions are so rare that it is difficult to foresee what would happen. Are you sure that no shots would be fired? When was the last time that a country sold a parcel of land even one hundredth the size of California? I mean sold to another country, not sold to people governed by the seller.
not all (if any) choices in a corporation are made by its employees.
Employees aren't born into their jobs. People apply for jobs and have an absolute right to refuse a job offer. They can refuse a job offer based on the age, gender, race, religion or any other characeristic of the person who is making a job offer. To accept a job offer is to agree to the terms of the offer, including restrictions on the power of the employee to make choices on the job.
Rightly or wrongly, not all the choices made in a nation are made by its citizens (...)
You and I are their property, in a sense, and are not given a say in most decisions.
I thought it was supposed to be the other way around: governments deriving their powers from the consent of the governed.