I’m from The Government, and I’m here to help.

One not entirely inaccurate definition of government is a loose agglomeration of third parties.

Or, less flatteringly, a stupendously large way too loose agglomeration of way too many third parties welding way too much power way too arbitrarily.

The difference here is that in a functioning democracy people have some control over their government. All the institutions are specifically built to be transparent and work for the public good, at least, in some sense of the word. A corporation, especially a monopoly doesn't care what you think, you have no control over it and the only thing that really matters to them is their bottom line. Are governments perfect? Of course not. Are random corpos better? Again, of course not.

Despite that fun trope, in reality democratic government reguarly delivers very well: Traffic safety systems work easily, dependably, economically. The Internet was developed by the government, the web at a government-funded research institution. NASA is the most cutting edge, most adventurous organization in the history of humanity. The US military created GPS for example, and has more globalized operations than any other organization has ever imagined, and from the bottom of the sea to GEO. Diseases are managed and contained, etc.

(Now if the people want to tear apart government, democracy delivers that too.)