Capitalism is sadly doing exactly what it's designed to do there's just a lot of propaganda to mislead you such as the infamous trickle down economics idea

Not really. The US has completely unchecked capitalism if you aren't wealthier than $100,000,000, as does the rest of the world thanks to a court that the IMF set up. If your country has a resource the capitalists want to exploit, and the people or government don't allow it, they will sue you in this international court and use the US military to impose fines of billions of dollars per year in "lost revenue." Much of Africa and South America can tell you all about it.

Capitalism and communism are economic systems not political theory.