Private companies and governments can both exist without accountability.

There is literally no government in the world that isn't somewhat accountable to citizens.

Meanwhile, there are many multinationals that are not accountable at all to the citizens of countries they operate in.

> There is literally no government in the world that isn't somewhat accountable to citizens.

Actually, there might only be a few government that are accountable to citizens. Maybe most governments care for their citizens, but accountable? I don't think so.

Every government is afraid of rebellion or strikes, or otherwise accountable to public opinion. The power that the average person has is considerable, and revolutions and revolts are not so uncommon.

Orders of magnitude less common than customers switching brands.

Companies are dominated by the major shareholders, basically the rich.

Guess what the us government is dominated by?