I agree that the rich in America are siphoning from the poor. But I think that the biggest way they steal from the poor is through debt, not living expenses.
Think about it. Americans are taught that they must go to university right after high school. Kids are forced to make a huge financial decision without any understanding of the consequences, and there's a lot of social pressure on them to conform by taking out a student loan.
Next Americans are taught that they should always use credit cards, and that they need to build a good credit score (so they can get approved for more debt later.) They are again pressured by advertising and social norms to take on debt, in addition to the gimmicky rewards like airline miles and cash back, which intices you to spend more than you normally would.
Finally people have even started using debt products like margin trading, which allows you to lose more money on the stock market than you even have, and apps like Afterpay allow you to buy expensive items you can't afford. It's just a never ending cycle of debt.
If people were taught about the debt trap from an early age they could protect themselves and actually save their money, not become a wage slave like so many Americans have.