[ska]

   "With hard work you can be successful in the sense of being able to afford a basic living or being moderately middle class"

There is plenty of empirical evidence that this is not really true. One of the pernicious things about the typical American narrative of success is that it often gets used in the contrapositive. This lets people feel good about discounting anyone viewed as "not successful" (whatever definition you want) as having been personally responsible for their own difficulties, so they can be safely ignored.