I gather Musk did. But I'd agree the argument that the easiest way to become a billionaire, at least in the tech industry, is to be born to exceptionally rich parents probably doesn't hold water. Still, I don't think any of them grew up dirt poor either.
Regardless of whether her parents were even able to feed properly her as a child?
I'd actually be quite curious about her own views on the degree to which government-provided assistance made it possible for her to get where she is today, though she seems to have avoided voicing them publicly.
What goalposts are you talking about? At any rate, plenty of other countries have their own rags-to-riches stories (India being the first to come to mind). I don't think such isolated/exceptional cases tell us much about what sorts of economic systems produce the best overall results, and to link back to the original post, many of them probably have their own "carrot stories" behind them too.
Oh and the school lunch program is still socialism, btw!