>The median success for the typical podcast, Amazon seller, or self-published author in terms of income, after one factors in the number of hours involved and start-up costs, amounts to less than minimum wage.
Potentially for the podcast and self published author, those are both highly saturated niches. But I don't believe that's the case for Amazon sellers. I know many people who make 6-7 figures a year profit on Amazon, well above minimum wage.