The proof of what works will be in the oblivion of what's left behind. What fails is rubbish and what survives in the end is good.
Well, I wouldn't put mere survival in the "Good" bin... mediocre, more like. to be good, it must thrive, in the face of competition. Which is why I will welcome enclaves of mutualism, when a prevailing market anarchy is achieved. What good is any system, if it doesn't have competition to keep it on its toes?