capitalism works for the capitalists,
That's quite true.
those that are in the core of the system (central bank) always win because they just invest.
Again, true. Like my bother who's a VP at one of those banks, he does quite well for himself. Not bad for the son of an immigrant who showed up in the US with $35 in his pocket. My parents had nothing when they came here, and before my dad died they had raised four educated, professional children, and owned a house and a commercial property in one of the most affluent counties in the country.
Nobody gave it to any of them. Not my parents, not my brother. They had to work their asses off for it. Opportunities don't exist in socialism, but they are plentiful in capitalism. So yes, capitalism most definitely works for capitalists.