I know you have one. My point is that if someone is a doctor, lawyer, PE, MBA, etc. ... they have 4 yrs of college, 3-4 yrs of grad school, and then doctors have a 3-6 year residency. For lawyers, accountants, and the like it takes years for them to make $200k, $300k or more. Not all of them make that, ever.
But your attitude seems to be that EVERYONE has the ability to make $500k a year ... not everyone does.
Also, I don't see why being a poor, starving runner means you necessarily have to be living off the American Taxpayer? In my state, I guess you could get foodstamps, or maybe healthcare, I don't know. I think if you are able-bodied and able to work you don't get anything ... I may be wrong.
But I don't know that pursuing distance running, XC skiing, rowing, swimming, triathlon, bike racing, mountain bike racing, Cyclocross racing, or anything else that doesn't pay means that you must be "sucking off the teet of the American taxpayer as so many choose to do".
Like the Hanson's runners, even if you never won any money, you are still supporting yourself.