You are right. I mean to say upper middle class.
Most rich people (billionaires, mulitmillionaires) did inherit their money. Yes, it's quite unfair unless you are born a billionaire or millionaire you will not be one. That I agree with! Yes.
I mean to say if you want to become middle class or upper middle class it's about 70% hardwork and 30% luck. I think most people can become middle class or upper middle class if they work hard at it. Will they ever become billionaires? hell no. Billionaires inherit their money. But can they get themselves out of the ghetto and become self supportive and not rely on the government? yes! Everyone has the ability to support themselves if they work hard at it. However to become SUPER rich, that is luck indeed.