Yes, he seems very intelligent.
But, per
@PWMDMD's point, just being a genius doesn't mean you'll end up wealthy. Many people with genius level IQ's have low motivation or other psychological handicaps that prevent them from attaining greatness (or their "full potential" if we are using the words that parents often toss out to their under-performing children). Others just bury themselves in a subject, like Stephen Hawking. Many struggle with anxiety, ADD/ADHD, depression, excessive spontaneity, boredom coupled with compulsive situational alteration...etc. There are myriad conditions that can have a profound impact on somebody who, to their peers, that know that person is brilliant, seems wildly under-performing.