Should being a billionaire be treated as a crime?

A large fortune by itself is not proof of a crime. The more useful questions are whether it came from fraud, coercion, corruption, or breaking labor and competition laws, and whether those rules are enforced consistently. If the concern is harm caused by extreme inequality, that calls for policy arguments, not treating wealth alone as evidence of wrongdoing.

You don't have to call it criminal to argue that extreme wealth should face stronger limits. Higher taxes on very large fortunes or inheritances, closing loopholes, and funding public services are possible policy choices. Each has practical complications, including how to value assets that aren't cash and how to prevent avoidance, so the details matter.

I'd be wary of making a fixed wealth ceiling the whole solution. A person's net worth can include ownership in a company rather than money sitting in an account, and a sudden forced sale could have knock-on effects. Rules against monopolies, political influence buying, and abusive treatment of workers target specific sources of harm more directly.

There is also a case for allowing people to build and invest large amounts of wealth. The counterpoint is that success shouldn't buy a separate set of rules or unchecked influence. The debate is less about whether anyone can spend a billion dollars in a lifetime and more about what obligations and limits society should attach to accumulating and controlling that much.