Just one point to the above - unemployment and minimum wage levels that are below what people need to live are a feature of the system. There simply aren't - by design - enough jobs for everyone. Someone who has to work two or three jobs to feed their kids and pay for childcare faces an immense, immense struggle to gain any qualifications that may lead to better work. Meanwhile people born rich not only have more money than they could ever need from the beginning, they close access to many of the best jobs via closed networks that are partly based on schooling and education but mostly based on social networks.
There is no amount of hard work that a poor kid from Appalachia can do that is going to compensate for having an uncle who can get them an internship at the NY Times and parents who can pay their rent while they work unpaid to gain that foot on the ladder. Meanwhile that Appalachian kid has to work to survive - they are coerced into working by threat of homelessness and lack of food, which feeds right back into the first point. Coercion is built into the system, as is the illusion of scarcity - and the fear which that coercion produces not only keeps people working in what are often awful jobs but it also stops them organising against the systems which exploit them.