Professional is almost any area that requires either higher education or some hard to learn skill.
However if you're skilled and/or educated, getting $100K shouldn't be a problem.
Now getting $500K/year is a much more serious problem. I'm failing to get to that level by just being professional (and good). It requires more of a business type of mindset (or lots of luck).
> Funny thing is that the common silent opinion in
> academia about those like her is that they are
> dropouts....
Why is it funny? Different strands of people apply different criteria for success. You appear to think it's money (versus time spent working/stress level); others rank academic credentials, willpower or whatever else higher.