A government is a monopoly which is (in theory, at least) accountable to the people. Companies usually aren't, except as far as the lawmakers (accountable to the people) make laws explicitly restricting their behaviour.
In theory, if a company has shareholders then it is accountable to them. But in reality, a small shareholder tends to get about as much say as an individual member of the public does with most government departments.
A government is a monopoly which is (in theory, at least) accountable to the people. Companies usually aren't, except as far as the lawmakers (accountable to the people) make laws explicitly restricting their behaviour.
In theory, if a company has shareholders then it is accountable to them. But in reality, a small shareholder tends to get about as much say as an individual member of the public does with most government departments.