What explanation is necessary? Just look at the pie chart. It shows a beautiful example of Nash Equilibrium.
Oh my, are you that hard-headed or blind?
iCEBREAKER, you are wasting my time. If you can get anyone credible here to explain to your side, I might respond further.
That you think the impacts of mining is modeled by Nash equilibrium is hilarious to me. I guess you haven't even figured out yet that your chart isn't addressing the question that was posed about impacts of centralization. You have a category error. You are merely modeling the percentage of the hashrate by some ill-defined metric called IP address or DNS name. That doesn't tell us if the impacts of mining are centralized. It is inconclusive. That we consistently have 2 - 3 pools as organized by that ill-defined metric with > 50% of the hashrate (51% attack threat), and 1 - 2 pools with > 25% of the hashrate (selfish mining threat), hints at the potential for centralization of impacts if the opportunity cost of not doing so is greater than every opportunity cost of doing so.