Ah, the good old Social Darwinism argument.
Survive or die, i am thriving because i am smart, dedicated, hardworking and you won't because likely you miss some of these things (backgrounds do not matter)
/s
So how does this person feed their family, then?
They won't be able to.
How does a wild animal feed his family if he can't catch any food? He gets out-competed by more effective individuals.
Given finite resources and unbounded population growth, population must grow to the point where there are not enough resources to support everybody, and then some people have to start dying.
As much as you'd like to invoke social Darwinism, maybe they are secretly lazy or whatever, but there is one underlying issue. We are a modern civilized society. As a society, we have an obligation to prepare our children for the future. "Let them starve" means I'm going to be killed in front of my son behind a theatre by someone who's parents were allowed to starve. The solution isn't to buy a house in a gated community and pretend like problems go away.
If people aren't prepared to give you money for it, it's obviously not creating as much value as you think it is. That's nobody's fault but your own.