FWIW if you consider what happened to "Black Wallstreet" it's easy to see why certain domestic groups might see any prospects of a better life as ultimately futile, especially when that's not the only example -- the Black Panthers are a great example for trying for a better life via neighborhood outreach and mutual aid instead of capitalism and they too were violently shut down and their leaders assassinated.

The problem isn't just poverty, it's generational poverty. Immigration is expensive and time consuming, whether you take the legal route or not. If you managed to immigrate to another country, that's already a huge achievement regardless of how much money you'll make there.

Also even cheap/easy unhealthy food can mean different things depending on your circumstances. There are plenty of tales of startup founders living on ramen before their company turned a profit or landed the investment but their situations are very different from those of the working generationally poor.

The ramen is always a temporary thing, a cost-cutting measure on your way to becoming a millionaire (or at least falling back onto your family's safety net of free rent and food if you fail). The Saturday McDonald's on the other hand is the highlight of the week because there's literally nothing to look forward to and you're already on the last dimes of your payday loan.