He is set for life no matter what.

There is only one way to hurt him- to humiliate him. To hit his ego. Booing him at the Chapelle show, for instance.

All we can do is keep doing that sort of thing until Real Life Iron Man becomes Real Life Terrence Howard as War Machine and gets replaced with some other asshole billionaire that sycophants will worship instead who hopefully will be mildly less insufferable.