Have you noticed the hundreds of thousands of totally destitute people flowing over the border, and becoming successful in America? According to your philosophy, that should be impossible.
How do you know this?
Regardless, they apparently believe that there is opportunity in America, and you don't.
How do you draw the conclusion that I believe there is a lack of opportunity? My parent comment says I believe there is tons of opportunity, if you have the right innate skills.
If you'd read the document I linked, you'd see that my concerns have nothing to do with a lack of opportunities, but rather that we don't provide sufficient tools to people to take up those opportunities. Furthermore, we put structural barriers in front of people based on their income level to achieving a modicum of financial security.
I know personally many immigrants to America arriving here with nothing, not even knowing English, and yet becoming successful businessmen, and many became independently wealthy.