I don't understand the relevance of your articles. What would nodes have to do with the issue of who creates the nodes? Why would nodes reject valid blocks arbi

I don't understand the relevance of your articles. What would nodes have to do with the issue of who creates the nodes? Why would nodes reject valid blocks arbitrarily? Why would it be an improvement? I'm talking about a situation where a small group of people would have access to exclusive technology that would let them mine blocks faster than the rest of the miners with no way for others to compute without losing money. Nodes are irrelevant here unless they decide to arbitrarily reject valid blocks coming for certain miners because they'd deem them "unfair competition", but that's a huge can of worms. Who decides who goes on the list? Based on what? Could it not be trivially worked around?