The government and corporations can not be clearly separated.
People from the one go to work for the other regularly[1], often as a reward for serving one-another's interests. They constantly scratch each other's backs, such as politicians awarding fat contracts to corporations and then being rewarded with a high paying job at the same corporation when they retire, or just outright bribery in a variety of forms. Governments also regularly hire highly placed executive from corporations to regulate industries.
History is full of examples of the military used to protect private (including corporate) interests, which are often seen by the ruling class as virtually synonymous with national interests. Protecting oil in the Middle East is one obvious example, but so is protecting banana corporations in South America, nevermind older examples such as using the military for colonialism and to further the slave trade.
Media corporations have been highly complicit in provoking and defending war. The newspaper magnate William Randolph Hearst was infamous for boasting for his paper's ability to start wars, saying, "You furnish the pictures. I'll furnish the war." Later media magnates (like Fox News' Rupert Murdoch) and outlets have been no less influential.
Private individuals who've made their fortunes in corporations, like the Koch brothers and Peter Thiel, can also have an enormous influence on politics and the government through their donation, advocacy, and having the ear of powerful politicians.
The military-industrial complex is yet another good example where corporations and governments are deeply intertwined, to the point of corporate interests having massive influence on both domestic and national security policy. It is a truism that political representatives in many states can't vote against military spending for fear of getting kicked out of office by their constituency, who depends on this military spending for their jobs (and their profits). There's endless corruption, bribes, billions of dollars going "missing", and kickbacks in the military as well, to the benefit of private individuals and corporations. Many politicians also own a lot of stock in military contractors and companies like Halliburton which benefit from both military spending and then reconstruction spending after the wars they authorize. This is yet another massive conflict of interest.
So when you favor corporations over governments, don't be so sure they're not two heads of the same beast.
[1] - Trump himself is probably the most famous current example, since he's top corporate executive and business owner at the pinnacle of political power in the US while having massive conflicts of interest between his economic and corporate interests and those of his political office, but this happens all throughout government in every administration (though usually not quite so brazenly).