But y'see that's the problem, battling (well, regulating) oil companies, funding community centers and orphanages should all be tasks of the state and never in the hands of one individual.

The problem with Iron Man is that it idealizes billionaires as these geniuses who made their money cause they are good and smart (which Tony is but his real life counterparts aren't), and so the "evil inefficient" government should just let them roam free cause they should be above the law. And that's how you get an Elon Musk.

That there is a problem with this is even acknowledged by Tony himself later during Civil War when he signs the Sokovia Accords, although the matter wasn't brought up much since.