There is no such thing as an economic node. I don't know where this delusion comes from.

All nodes are the same size, the size of the block chain. Someone owning more Bitcoin does not make their node bigger.

All full nodes enforce consensus. No one can force a node to accept a change in rules, as changes require software updates. Nodes who do not change their software to adopt the new rules will reject blocks made with new rules. And this causes a fork

I write again, read the white paper, and read up on the history of Bitcoin Cash. Idle nodes, economic nodes, these are made up nonsense. Just because it makes sense to you doesn't mean you aren't wrong and perpetuating a misunderstanding of how Bitcoin works.