Your list of examples brings to mind a question I've had in my head for a while...
What are the professions where a hard working and intelligent person can reach a $500k income with a high degree of certainty?
What are the professions where a hard working and intelligent person can reach a $500k income with a high degree of certainty?
So, to answer your question, there is no profession (in the USA, at least) with "a high degree of certainty" of hitting $500k.