No, they aren't. A free market capitalism will always work for the greater good of humanity, except when it gets distorted by (inhuman) outside forces, like for example the state.
What evidence do you have that this claim is true?
If your evidence is theoretical, what separates your argument from the argument "if true Communism were ever implemented, it would always work for the greater good of humanity"?
I believe the natural end of a totally free market will be a world where wealth and power is concentrated in only a few hands. It will be very similar to the middle ages. Just replace nobility with capitalists.
