Not a freelancer. That's how I do it. I don't think you're asking the right question, though. 100k+ USD/yr in some parts of the country is a lot different than 100k+ USD/yr in other parts. The really smart ones have found jobs in metro areas that pay lots, but work remotely from areas with low cost of living expenses, and put all the extra away into college funds for their kids and Roth 401k's invested in high risk,…
100k+ as a freelancer is significantly more rare - requiring either very steady work, a niche skill-set, or great marketing skills.