The definition of government is a monopoly on violence/force. Furthermore, no monopoly can be sustained without the force of government.
Absent the government I'm not even certain there would be weapons of mass destruction. It is the state who demands these weapons to maintain its monopoly on force.
A business, on the other hand, is interested in making a profit. Absent government coercion, a business must provide a worthwhile good/service to make a profit, all while competing in the marketplace.
Anything an "$EVIL_CORP" might do pales in comparison to actions we know governments have done. One must only tally up the hundreds of millions of lives lost during the 20th century in senseless wars, democide, etc.